| Wednesday, April 5 |
| » Major-league debuts: Hosken Powell (Twins) |
| Friday, April 7 |
| » Lost to Cardinals (1-0), 5-1 | Veteran's Stadium (0-1) | 0-1 | |
| » W: Bob Forsch (1-0) L: Steve Carlton (0-1) | Second | 1 out |
| Saturday, April 8 |
| » Defeated Cardinals (1-1), 7-0 | Veteran's Stadium (1-1) | 1-1 | |
| » W: Larry Christenson (1-0) L: Eric Rasmussen (0-1) | Second | 1 out |
| Sunday, April 9 |
| » Defeated Cardinals (1-2), 12-3 | Veteran's Stadium (2-1) | 2-1 | Won 2 |
| » W: Randy Lerch (1-0) L: John Urrea (0-1) | Second | ½ out |
| Wednesday, April 12 |
| » Lost to Expos (2-3), 8-7 | Veteran's Stadium (2-2) | 2-2 | |
| » W: Steve Rogers (1-1) L: Jim Lonborg (0-1) S: Bill Atkinson (1) | Third | ½ out |
| Friday, April 14 |
| » Defeated Cardinals (4-3), 4-3 | Busch Stadium II (1-0) | 3-2 | |
| » W: Steve Carlton (1-1) L: Pete Vuckovich (0-1) S: Tug McGraw (1) | Second | 1½ out |
| Saturday, April 15 |
| » Defeated Cardinals (4-4), 3-2 | Busch Stadium II (2-0) | 4-2 | Won 2 |
| » W: Tug McGraw (1-0) L: Pete Vuckovich (0-2) | First | -- |
| Sunday, April 16 |
| » Lost to Cardinals (5-4), 5-0 | Busch Stadium II (2-1) | 4-3 | |
| » W: Bob Forsch (3-0) L: Randy Lerch (1-1) | First | -- |
| Monday, April 17 |
| » Defeated Pirates (3-7), 6-2 | Three Rivers Stadium (1-0) | 5-3 | |
| » W: Jim Lonborg (1-1) L: John Candelaria (1-2) | First | -- |
| Saturday, April 22 |
| » Lost to Expos (6-5), 7-3 | Stade Olympique (0-1) | 5-4 | |
| » W: Wayne Twitchell (1-1) L: Steve Carlton (1-2) S: Stan Bahnsen (1) | Fourth | 2½ out |
| » Lost to Expos (7-5), 5-3 | Stade Olympique (0-2) | 5-5 | Lost 2 |
| » W: Ross Grimsley (3-0) L: Larry Christenson (1-1) S: Stan Bahnsen (2) | Fourth | 2½ out |
| Sunday, April 23 |
| » Lost to Expos (8-5), 5-2 | Stade Olympique (0-3) | 5-6 | Lost 3 |
| » W: Steve Rogers (2-2) L: Jim Lonborg (1-2) S: Darold Knowles (1) | Fifth | 2 out |
| Monday, April 24 |
| » Defeated Cubs (8-7), 12-2 | Veteran's Stadium (3-2) | 6-6 | |
| » W: Randy Lerch (2-1) L: Woodie Fryman (0-1) | Fourth | 2 out |
| Former Phillie Marty Walker dies in Philadelphia, PA at the age of 80. |
| Tuesday, April 25 |
| » Defeated Cubs (8-8), 7-0 | Veteran's Stadium (4-2) | 7-6 | Won 2 |
| » W: Jim Kaat (1-0) L: Dennis Lamp (1-3) | Second | 1 out |
| Wednesday, April 26 |
| » Lost to Cubs (9-8), 4-2 | Veteran's Stadium (4-3) | 7-7 | |
| » W: Rick Reuschel (3-2) L: Steve Carlton (1-3) S: Bruce Sutter (3) | Third | 1 out |
| Friday, April 28 |
| » Defeated Padres (7-10), 3-2 | Veteran's Stadium (5-3) | 8-7 | |
| » W: Larry Christenson (2-1) L: Bob Owchinko (1-2) S: Ron Reed (1) | Third | 1 out |
| Saturday, April 29 |
| » Defeated Padres (7-11), 7-2 | Veteran's Stadium (6-3) | 9-7 | Won 2 |
| » W: Jim Lonborg (2-2) L: Dave Freisleben (0-2) | First | -- |
| Sunday, April 30 |
| » Defeated Padres (7-12), 11-4 | Veteran's Stadium (7-3) | 10-7 | Won 3 |
| » W: Randy Lerch (3-1) L: Randy Jones (1-2) | First | -- |
| Monday, May 1 |
| » Defeated Reds (13-9), 12-1 | Riverfront Stadium (1-0) | 11-7 | Won 4 |
| » W: Steve Carlton (2-3) L: Tom Seaver (0-3) | First | -- |
| Wednesday, May 3 |
| » Lost to Reds (14-9), 12-3 | Riverfront Stadium (1-1) | 11-8 | |
| » W: Fred Norman (4-0) L: Larry Christenson (2-2) | Second | ½ out |
| Friday, May 5 |
| » Defeated Mets (11-15), 9-4 | Veteran's Stadium (8-3) | 12-8 | |
| » W: Jim Lonborg (3-2) L: Nino Espinosa (1-2) S: Tug McGraw (2) | Second | ½ out |
| Saturday, May 6 |
| » Defeated Mets (11-16), 7-2 | Veteran's Stadium (9-3) | 13-8 | Won 2 |
| » W: Steve Carlton (3-3) L: Pat Zachry (3-1) | First | -- |
| Sunday, May 7 |
| » Defeated Mets (11-17), 8-5 | Veteran's Stadium (10-3) | 14-8 | Won 3 |
| » W: Gene Garber (1-0) L: Craig Swan (1-2) S: Tug McGraw (3) | First | -- |
| Tuesday, May 9 |
| » Lost to Astros (11-15), 5-1 | Veteran's Stadium (10-4) | 14-9 | |
| » W: J.R. Richard (2-3) L: Larry Christenson (2-3) | First | -- |
| Wednesday, May 10 |
| » Defeated Astros (11-16), 3-1 | Veteran's Stadium (11-4) | 15-9 | |
| » W: Jim Lonborg (4-2) L: Mark Lemongello (2-4) | First | -- |
| Thursday, May 11 |
| » Defeated Reds (17-13), 4-1 | Veteran's Stadium (12-4) | 16-9 | Won 2 |
| » W: Steve Carlton (4-3) L: Tom Seaver (1-4) | First | -- |
| Friday, May 12 |
| » Lost to Reds (18-13), 3-0 | Veteran's Stadium (12-5) | 16-10 | |
| » W: Bill Bonham (4-0) L: Randy Lerch (3-2) S: Paul Moskau (1) | First | -- |
| Saturday, May 13 |
| » Lost to Reds (19-13), 4-3 | Veteran's Stadium (12-6) | 16-11 | Lost 2 |
| » W: Manny Sarmiento (3-1) L: Tug McGraw (1-1) | First | -- |
| Sunday, May 14 |
| » Defeated Reds (19-14), 7-4 | Veteran's Stadium (13-6) | 17-11 | |
| » W: Larry Christenson (3-3) L: Tom Hume (2-5) S: Ron Reed (2) | First | -- |
| Monday, May 15 |
| » Lost to Astros (14-16), 5-0 | Astrodome (0-1) | 17-12 | |
| » W: J.R. Richard (3-3) L: Jim Lonborg (4-3) | First | -- |
| Tuesday, May 16 |
| » Lost to Astros (15-16), 6-1 | Astrodome (0-2) | 17-13 | Lost 2 |
| » W: Mark Lemongello (3-4) L: Steve Carlton (4-4) | First | -- |
| Wednesday, May 17 |
| » Lost to Astros (16-16), 2-1 | Astrodome (0-3) | 17-14 | Lost 3 |
| » W: Joaquin Andujar (3-2) L: Randy Lerch (3-3) S: Tom Dixon (1) | First | -- |
| Thursday, May 18 |
| » Defeated Astros (16-17), 8-5 | Astrodome (1-3) | 18-14 | |
| » W: Gene Garber (2-0) L: Joe Sambito (2-1) | First | -- |
| Friday, May 19 |
| » Lost to Mets (17-21), 4-3 | Shea Stadium (0-1) | 18-15 | |
| » W: Skip Lockwood (3-3) L: Tug McGraw (1-2) | First | -- |
| Saturday, May 20 |
| » Defeated Mets (17-22), 9-4 | Shea Stadium (1-1) | 19-15 | |
| » W: Tug McGraw (2-2) L: Dale Murray (1-2) | First | -- |
| Sunday, May 21 |
| » Lost to Mets (18-22), 6-5 | Shea Stadium (1-2) | 19-16 | |
| » W: Skip Lockwood (4-3) L: Tug McGraw (2-3) | First | -- |
| Wednesday, May 24 |
| » Lost to Cubs (20-17), 6-4 | Wrigley Field (0-1) | 19-17 | Lost 2 |
| » W: Bruce Sutter (4-2) L: Gene Garber (2-1) | Second | ½ out |
| Thursday, May 25 |
| » Lost to Cubs (21-17), 5-1 | Wrigley Field (0-2) | 19-18 | Lost 3 |
| » W: Rick Reuschel (5-3) L: Steve Carlton (4-5) S: Bruce Sutter (6) | Second | 1½ out |
| Friday, May 26 |
| » Lost to Braves (16-24), 4-2 | Atlanta-Fulton County Stadium (0-1) | 19-19 | Lost 4 |
| » W: Phil Niekro (5-6) L: Randy Lerch (3-4) | Second | 2½ out |
| Saturday, May 27 |
| » Defeated Braves (16-25), 6-5 | Atlanta-Fulton County Stadium (1-1) | 20-19 | |
| » W: Tug McGraw (3-3) L: Rick Camp (0-2) S: Gene Garber (1) | Second | 2½ out |
| Sunday, May 28 |
| » Lost to Braves (17-25), 5-3 | Atlanta-Fulton County Stadium (1-2) | 20-20 | |
| » W: Preston Hanna (4-0) L: Larry Christenson (3-4) S: Jamie Easterly (1) | Second | 3½ out |
| Monday, May 29 |
| » Defeated Pirates (21-24), 4-3 | Veteran's Stadium (14-6) | 21-20 | |
| » W: Warren Brusstar (1-0) L: Dave Hamilton (0-1) | Second | 2½ out |
| Tuesday, May 30 |
| » Defeated Pirates (21-25), 6-1 | Veteran's Stadium (15-6) | 22-20 | Won 2 |
| » W: Steve Carlton (5-5) L: Bert Blyleven (3-5) | Second | 1½ out |
| Wednesday, May 31 |
| » Lost to Pirates (22-25), 2-1 | Veteran's Stadium (15-7) | 22-21 | |
| » W: John Candelaria (5-6) L: Randy Lerch (3-5) S: Kent Tekulve (5) | Third | 1½ out |
| Friday, June 2 |
| » Defeated Dodgers (27-21), 4-2 | Veteran's Stadium (16-7) | 23-21 | |
| » W: Jim Lonborg (5-3) L: Burt Hooton (4-5) S: Gene Garber (2) | Second | 1½ out |
| Former Phillie Bob McGraw dies in Boise, ID at the age of 84. |
| Saturday, June 3 |
| » Defeated Dodgers (27-22), 5-1 | Veteran's Stadium (17-7) | 24-21 | Won 2 |
| » W: Tug McGraw (4-3) L: Terry Forster (1-1) | Second | 1½ out |
| Sunday, June 4 |
| » Defeated Dodgers (27-23), 9-4 | Veteran's Stadium (18-7) | 25-21 | Won 3 |
| » W: Jim Kaat (2-0) L: Tommy John (7-3) | Second | 1½ out |
| Monday, June 5 |
| » Defeated Giants (32-18), 4-3 | Veteran's Stadium (19-7) | 26-21 | Won 4 |
| » W: Steve Carlton (6-5) L: Vida Blue (6-4) S: Ron Reed (3) | Second | 1½ out |
| Future Phillie Travis Chapman is born in Jacksonville, FL. |
| Tuesday, June 6 |
| » Defeated Giants (32-19), 7-6 | Veteran's Stadium (20-7) | 27-21 | Won 5 |
| » W: Tug McGraw (5-3) L: Gary Lavelle (4-4) | Second | 1½ out |
| Wednesday, June 7 |
| » Defeated Giants (32-20), 5-4 | Veteran's Stadium (21-7) | 28-21 | Won 6 |
| » W: Tug McGraw (6-3) L: Randy Moffitt (5-2) | Second | ½ out |
| Friday, June 9 |
| » Defeated Braves (20-33), 6-1 | Veteran's Stadium (22-7) | 29-21 | Won 7 |
| » W: Larry Christenson (4-4) L: Eddie Solomon (1-4) | Second | 1 out |
| Saturday, June 10 |
| » Defeated Braves (20-34), 6-2 | Veteran's Stadium (23-7) | 30-21 | Won 8 |
| » W: Jim Kaat (3-0) L: Dick Ruthven (2-6) S: Gene Garber (3) | First | -- |
| Sunday, June 11 |
| » Lost to Braves (21-34), 4-0 | Veteran's Stadium (23-8) | 30-22 | |
| » W: Phil Niekro (7-6) L: Steve Carlton (6-6) | Second | 1 out |
| Monday, June 12 |
| » Lost to Dodgers (31-27), 6-5 | Dodger Stadium (0-1) | 30-23 | Lost 2 |
| » W: Burt Hooton (5-5) L: Jim Lonborg (5-4) S: Lance Rautzhan (1) | Second | 2 out |
| Tuesday, June 13 |
| » Lost to Dodgers (32-27), 5-3 | Dodger Stadium (0-2) | 30-24 | Lost 3 |
| » W: Don Sutton (5-6) L: Randy Lerch (3-6) | Second | 2 out |
| Wednesday, June 14 |
| » Lost to Giants (37-21), 2-1 | Candlestick Park (0-1) | 30-25 | Lost 4 |
| » W: Vida Blue (8-4) L: Larry Christenson (4-5) S: Randy Moffitt (4) | Second | 2 out |
| Thursday, June 15 |
| » Lost to Giants (38-21), 6-1 | Candlestick Park (0-2) | 30-26 | Lost 5 |
| » W: John Montefusco (6-2) L: Jim Kaat (3-1) | Second | 2½ out |
| Friday, June 16 |
| » Defeated Padres (27-35), 5-0 | San Diego/Jack Murphy Stadium (1-0) | 31-26 | |
| » W: Steve Carlton (7-6) L: Randy Jones (5-5) | Second | 2½ out |
| Saturday, June 17 |
| » Lost to Padres (28-35), 7-0 | San Diego/Jack Murphy Stadium (1-1) | 31-27 | |
| » W: Bob Owchinko (4-6) L: Jim Lonborg (5-5) | Second | 2½ out |
| Sunday, June 18 |
| » Lost to Padres (29-35), 4-1 | San Diego/Jack Murphy Stadium (1-2) | 31-28 | Lost 2 |
| » W: Gaylord Perry (7-2) L: Dick Ruthven (2-7) S: Rollie Fingers (15) | Second | 2½ out |
| Tuesday, June 20 |
| » Lost to Cardinals (24-44), 4-2 | Veteran's Stadium (23-9) | 31-29 | Lost 3 |
| » W: Bob Forsch (8-6) L: Larry Christenson (4-6) S: Mark Littell (2) | Second | 3 out |
| Thursday, June 22 |
| » Defeated Cardinals (24-45), 2-1 | Veteran's Stadium (24-9) | 32-29 | |
| » W: Steve Carlton (8-6) L: John Denny (6-6) | Second | 2 out |
| Friday, June 23 |
| » Defeated Cubs (35-29), 6-1 | Veteran's Stadium (25-9) | 33-29 | Won 2 |
| » W: Dick Ruthven (3-7) L: Dave Roberts (3-2) | First | -- |
| » Defeated Cubs (35-30), 6-1 | Veteran's Stadium (26-9) | 34-29 | Won 3 |
| » W: Jim Lonborg (6-5) L: Dennis Lamp (2-8) | First | -- |
| Saturday, June 24 |
| » Defeated Cubs (35-31), 6-2 | Veteran's Stadium (27-9) | 35-29 | Won 4 |
| » W: Jim Kaat (4-1) L: Ken Holtzman (1-2) S: Ron Reed (4) | First | -- |
| Sunday, June 25 |
| » Defeated Cubs (35-32), 4-2 | Veteran's Stadium (28-9) | 36-29 | Won 5 |
| » W: Larry Christenson (5-6) L: Rick Reuschel (8-5) | First | -- |
| Monday, June 26 |
| » Lost to Expos (37-35), 5-1 | Stade Olympique (0-4) | 36-30 | |
| » W: Steve Rogers (9-7) L: Steve Carlton (8-7) | First | -- |
| Tuesday, June 27 |
| » Defeated Expos (37-36), 1-0 | Stade Olympique (1-4) | 37-30 | |
| » W: Dick Ruthven (4-7) L: Hal Dues (1-4) | First | -- |
| Wednesday, June 28 |
| » Defeated Expos (37-37), 7-5 | Stade Olympique (2-4) | 38-30 | Won 2 |
| » W: Jim Lonborg (7-5) L: Mike Garman (0-3) S: Tug McGraw (4) | First | -- |
| Former Phillie Johnny Schulte dies in St.Louis, MO at the age of 82. |
| Thursday, June 29 |
| » Defeated Cubs (37-34), 9-3 | Wrigley Field (1-2) | 39-30 | Won 3 |
| » W: Jim Kaat (5-1) L: Dave Roberts (3-3) S: Tug McGraw (5) | First | -- |
| Friday, June 30 |
| » Lost to Cubs (38-34), 2-0 | Wrigley Field (1-3) | 39-31 | |
| » W: Mike Krukow (1-0) L: Larry Christenson (5-7) | First | -- |
| » Defeated Cubs (38-35), 6-5 | Wrigley Field (2-3) | 40-31 | |
| » W: Tug McGraw (7-3) L: Bruce Sutter (5-3) | First | -- |
| Saturday, July 1 |
| » Defeated Cubs (38-36), 2-1 | Wrigley Field (3-3) | 41-31 | Won 2 |
| » W: Randy Lerch (4-6) L: Dennis Lamp (2-10) S: Ron Reed (5) | First | -- |
| Sunday, July 2 |
| » Defeated Cubs (38-37), 6-5 | Wrigley Field (4-3) | 42-31 | Won 3 |
| » W: Dick Ruthven (5-7) L: Ken Holtzman (1-3) S: Tug McGraw (6) | First | -- |
| Tuesday, July 4 |
| » Lost to Mets (34-46), 4-0 | Shea Stadium (1-3) | 42-32 | |
| » W: Pat Zachry (10-3) L: Larry Christenson (5-8) | First | -- |
| » Defeated Mets (34-47), 3-2 | Shea Stadium (2-3) | 43-32 | |
| » W: Rawly Eastwick (3-1) L: Craig Swan (1-5) S: Ron Reed (6) | First | -- |
| Wednesday, July 5 |
| » Defeated Mets (34-48), 7-5 | Shea Stadium (3-3) | 44-32 | Won 2 |
| » W: Warren Brusstar (2-0) L: Jerry Koosman (2-9) S: Tug McGraw (7) | First | -- |
| Thursday, July 6 |
| » Defeated Expos (39-43), 7-6 | Veteran's Stadium (29-9) | 45-32 | Won 3 |
| » W: Rawly Eastwick (4-1) L: Ross Grimsley (11-6) | First | -- |
| Friday, July 7 |
| » Lost to Expos (40-43), 7-4 | Veteran's Stadium (29-10) | 45-33 | |
| » W: Steve Rogers (11-7) L: Dick Ruthven (5-8) S: Mike Garman (6) | First | -- |
| Saturday, July 8 |
| » Defeated Expos (40-44), 6-3 | Veteran's Stadium (30-10) | 46-33 | |
| » W: Larry Christenson (6-8) L: Woodie Fryman (3-7) S: Ron Reed (7) | First | -- |
| » Lost to Expos (41-44), 8-1 | Veteran's Stadium (30-11) | 46-34 | |
| » W: Hal Dues (3-4) L: Jim Lonborg (7-6) | First | -- |
| Sunday, July 9 |
| » Defeated Expos (41-45), 8-7 | Veteran's Stadium (31-11) | 47-34 | |
| » W: Tug McGraw (8-3) L: Darold Knowles (2-2) | First | -- |
| Friday, July 14 |
| » Lost to Braves (38-47), 7-2 | Atlanta-Fulton County Stadium (1-3) | 47-35 | |
| » W: Phil Niekro (10-9) L: Steve Carlton (8-8) | First | -- |
| » Major-league debuts: Glenn Hubbard (Braves) |
| Saturday, July 15 |
| » Lost to Braves (39-47), 3-2 | Atlanta-Fulton County Stadium (1-4) | 47-36 | Lost 2 |
| » W: Rick Camp (2-2) L: Jim Kaat (5-2) S: Gene Garber (12) | First | -- |
| Sunday, July 16 |
| » Defeated Braves (39-48), 4-2 | Atlanta-Fulton County Stadium (2-4) | 48-36 | |
| » W: Dick Ruthven (6-8) L: Preston Hanna (7-6) S: Ron Reed (8) | First | -- |
| Monday, July 17 |
| » Lost to Astros (39-49), 2-1 | Astrodome (1-4) | 48-37 | |
| » W: Joe Niekro (6-7) L: Rawly Eastwick (4-2) | First | -- |
| Tuesday, July 18 |
| » Lost to Astros (40-49), 9-1 | Astrodome (1-5) | 48-38 | Lost 2 |
| » W: J.R. Richard (9-9) L: Jim Lonborg (7-7) | First | -- |
| Wednesday, July 19 |
| » Lost to Reds (54-39), 7-2 | Veteran's Stadium (31-12) | 48-39 | Lost 3 |
| » W: Dave Tomlin (6-1) L: Steve Carlton (8-9) S: Doug Bair (16) | First | -- |
| Thursday, July 20 |
| » Defeated Reds (54-40), 8-6 | Veteran's Stadium (32-12) | 49-39 | |
| » W: Warren Brusstar (3-0) L: Manny Sarmiento (7-6) S: Tug McGraw (8) | First | -- |
| Friday, July 21 |
| » Defeated Astros (41-53), 6-1 | Veteran's Stadium (33-12) | 50-39 | Won 2 |
| » W: Dick Ruthven (7-8) L: Joe Niekro (6-8) | First | -- |
| » Defeated Astros (41-54), 8-2 | Veteran's Stadium (34-12) | 51-39 | Won 3 |
| » W: Larry Christenson (7-8) L: Rick Williams (1-2) | First | -- |
| Saturday, July 22 |
| » Defeated Astros (41-55), 3-2 | Veteran's Stadium (35-12) | 52-39 | Won 4 |
| » W: Ron Reed (1-0) L: Ken Forsch (4-4) | First | -- |
| Sunday, July 23 |
| » Defeated Astros (41-56), 13-2 | Veteran's Stadium (36-12) | 53-39 | Won 5 |
| » W: Steve Carlton (9-9) L: Tom Dixon (5-7) | First | -- |
| Monday, July 24 |
| » Lost to Braves (44-53), 5-1 | Veteran's Stadium (36-13) | 53-40 | |
| » W: Eddie Solomon (3-4) L: Jim Lonborg (7-8) S: Craig Skok (2) | First | -- |
| Tuesday, July 25 |
| » Lost to Braves (45-53), 4-0 | Veteran's Stadium (36-14) | 53-41 | Lost 2 |
| » W: Tommy Boggs (2-5) L: Larry Christenson (7-9) | First | -- |
| Wednesday, July 26 |
| » Lost to Braves (46-53), 4-2 | Veteran's Stadium (36-15) | 53-42 | Lost 3 |
| » W: Phil Niekro (12-10) L: Jim Kaat (5-3) | First | -- |
| Friday, July 28 |
| » Defeated Reds (58-43), 12-2 | Riverfront Stadium (2-1) | 54-42 | |
| » W: Randy Lerch (5-6) L: Fred Norman (9-6) | First | -- |
| » Lost to Reds (59-43), 2-1 | Riverfront Stadium (2-2) | 54-43 | |
| » W: Tom Seaver (10-9) L: Steve Carlton (9-10) S: Doug Bair (18) | First | -- |
| Saturday, July 29 |
| » Lost to Reds (60-43), 6-2 | Riverfront Stadium (2-3) | 54-44 | Lost 2 |
| » W: Paul Moskau (2-2) L: Jim Lonborg (7-9) | First | -- |
| Sunday, July 30 |
| » Lost to Reds (61-43), 5-3 | Riverfront Stadium (2-4) | 54-45 | Lost 3 |
| » W: Tom Hume (5-10) L: Larry Christenson (7-10) S: Doug Bair (19) | First | -- |
| Monday, July 31 |
| » Defeated Mets (45-62), 6-1 | Veteran's Stadium (37-15) | 55-45 | |
| » W: Dick Ruthven (8-8) L: Nino Espinosa (9-9) | First | -- |
| Tuesday, August 1 |
| » Lost to Mets (46-62), 5-1 | Veteran's Stadium (37-16) | 55-46 | |
| » W: Kevin Kobel (2-2) L: Steve Carlton (9-11) | First | -- |
| Wednesday, August 2 |
| » Defeated Mets (46-63), 8-6 | Veteran's Stadium (38-16) | 56-46 | |
| » W: Randy Lerch (6-6) L: Jerry Koosman (3-12) S: Tug McGraw (9) | First | -- |
| Friday, August 4 |
| » Defeated Pirates (49-54), 2-0 | Three Rivers Stadium (2-0) | 57-46 | Won 2 |
| » W: Larry Christenson (8-10) L: Jim Rooker (6-8) | First | -- |
| » Lost to Pirates (50-54), 5-2 | Three Rivers Stadium (2-1) | 57-47 | |
| » W: Don Robinson (6-5) L: Jim Kaat (5-4) | First | -- |
| Sunday, August 6 |
| » Defeated Pirates (50-55), 3-2 | Three Rivers Stadium (3-1) | 58-47 | |
| » W: Dick Ruthven (9-8) L: Bert Blyleven (9-7) | First | -- |
| » Defeated Pirates (50-56), 5-0 | Three Rivers Stadium (4-1) | 59-47 | Won 2 |
| » W: Steve Carlton (10-11) L: Jim Bibby (6-6) | First | -- |
| Monday, August 7 |
| » Lost to Cardinals (43-68), 6-3 | Busch Stadium II (2-2) | 59-48 | |
| » W: Aurelio Lopez (1-1) L: Randy Lerch (6-7) S: Mark Littell (6) | First | -- |
| Tuesday, August 8 |
| » Lost to Cardinals (44-68), 2-0 | Busch Stadium II (2-3) | 59-49 | Lost 2 |
| » W: Pete Vuckovich (9-9) L: Larry Christenson (8-11) | First | -- |
| » Lost to Cardinals (45-68), 6-2 | Busch Stadium II (2-4) | 59-50 | Lost 3 |
| » W: Tom Bruno (2-0) L: Jim Lonborg (7-10) | First | -- |
| Wednesday, August 9 |
| » Defeated Cardinals (45-69), 6-3 | Busch Stadium II (3-4) | 60-50 | |
| » W: Jim Kaat (6-4) L: Bob Forsch (9-13) S: Ron Reed (9) | First | -- |
| Thursday, August 10 |
| » Defeated Pirates (51-59), 3-1 | Veteran's Stadium (39-16) | 61-50 | Won 2 |
| » W: Dick Ruthven (10-8) L: Bert Blyleven (9-8) | First | -- |
| Friday, August 11 |
| » Defeated Pirates (51-60), 15-4 | Veteran's Stadium (40-16) | 62-50 | Won 3 |
| » W: Steve Carlton (11-11) L: Bruce Kison (3-4) | First | -- |
| Saturday, August 12 |
| » Defeated Pirates (51-61), 10-1 | Veteran's Stadium (41-16) | 63-50 | Won 4 |
| » W: Randy Lerch (7-7) L: Jim Bibby (6-7) | First | -- |
| Sunday, August 13 |
| » Lost to Pirates (52-61), 7-3 | Veteran's Stadium (41-17) | 63-51 | |
| » W: Don Robinson (8-5) L: Larry Christenson (8-12) | First | -- |
| Tuesday, August 15 |
| » Lost to Dodgers (69-50), 5-4 | Veteran's Stadium (41-18) | 63-52 | Lost 2 |
| » W: Doug Rau (12-7) L: Dick Ruthven (10-9) S: Lance Rautzhan (4) | First | -- |
| Wednesday, August 16 |
| » Lost to Dodgers (70-50), 5-2 | Veteran's Stadium (41-19) | 63-53 | Lost 3 |
| » W: Bob Welch (5-0) L: Jim Kaat (6-5) | First | -- |
| Thursday, August 17 |
| » Lost to Dodgers (71-50), 5-2 | Veteran's Stadium (41-20) | 63-54 | Lost 4 |
| » W: Burt Hooton (13-8) L: Tug McGraw (8-4) S: Terry Forster (15) | First | -- |
| Friday, August 18 |
| » Lost to Giants (71-51), 6-5 | Veteran's Stadium (41-21) | 63-55 | Lost 5 |
| » W: Gary Lavelle (10-9) L: Tug McGraw (8-5) | First | -- |
| Former Phillie George Harper dies in Magnolia, AR at the age of 87. |
| Saturday, August 19 |
| » Defeated Giants (71-52), 3-0 | Veteran's Stadium (42-21) | 64-55 | |
| » W: Steve Carlton (12-11) L: John Montefusco (9-5) | First | -- |
| Sunday, August 20 |
| » Defeated Giants (71-53), 5-3 | Veteran's Stadium (43-21) | 65-55 | Won 2 |
| » W: Dick Ruthven (11-9) L: Jim Barr (6-10) S: Ron Reed (10) | First | -- |
| Monday, August 21 |
| » Lost to Padres (66-59), 7-3 | Veteran's Stadium (43-22) | 65-56 | |
| » W: Gaylord Perry (15-5) L: Warren Brusstar (3-1) S: Bob Shirley (4) | First | -- |
| Tuesday, August 22 |
| » Defeated Padres (66-60), 5-3 | Veteran's Stadium (44-22) | 66-56 | |
| » W: Larry Christenson (9-12) L: Eric Rasmussen (12-10) S: Ron Reed (11) | First | -- |
| Wednesday, August 23 |
| » Lost to Padres (67-60), 6-5 | Veteran's Stadium (44-23) | 66-57 | |
| » W: Rollie Fingers (5-11) L: Ron Reed (1-1) | First | -- |
| Thursday, August 24 |
| » Lost to Dodgers (75-52), 5-4 | Dodger Stadium (0-3) | 66-58 | Lost 2 |
| » W: Tommy John (15-9) L: Warren Brusstar (3-2) S: Charlie Hough (7) | First | -- |
| Friday, August 25 |
| » Lost to Dodgers (76-52), 6-5 | Dodger Stadium (0-4) | 66-59 | Lost 3 |
| » W: Lance Rautzhan (2-0) L: Ron Reed (1-2) | First | -- |
| Saturday, August 26 |
| » Defeated Dodgers (76-53), 3-1 | Dodger Stadium (1-4) | 67-59 | |
| » W: Randy Lerch (8-7) L: Doug Rau (12-8) | First | -- |
| Sunday, August 27 |
| » Defeated Dodgers (76-54), 9-3 | Dodger Stadium (2-4) | 68-59 | Won 2 |
| » W: Larry Christenson (10-12) L: Bob Welch (5-2) | First | -- |
| Monday, August 28 |
| » Defeated Padres (69-63), 6-1 | San Diego/Jack Murphy Stadium (2-2) | 69-59 | Won 3 |
| » W: Jim Kaat (7-5) L: Randy Jones (11-12) | First | -- |
| Tuesday, August 29 |
| » Defeated Padres (69-64), 9-5 | San Diego/Jack Murphy Stadium (3-2) | 70-59 | Won 4 |
| » W: Dick Ruthven (12-9) L: Bob Owchinko (8-11) | First | -- |
| Wednesday, August 30 |
| » Defeated Padres (69-65), 6-5 | San Diego/Jack Murphy Stadium (4-2) | 71-59 | Won 5 |
| » W: Warren Brusstar (4-2) L: Rollie Fingers (5-12) | First | -- |
| Friday, September 1 |
| » Lost to Giants (78-56), 4-3 | Candlestick Park (0-3) | 71-60 | |
| » W: Gary Lavelle (11-9) L: Steve Carlton (12-12) | First | -- |
| Saturday, September 2 |
| » Defeated Giants (78-57), 3-1 | Candlestick Park (1-3) | 72-60 | |
| » W: Larry Christenson (11-12) L: Gary Lavelle (11-10) | First | -- |
| » Major-league debuts: Lonnie Smith (Phillies) |
| Sunday, September 3 |
| » Lost to Giants (79-57), 4-1 | Candlestick Park (1-4) | 72-61 | |
| » W: Bob Knepper (15-9) L: Dick Ruthven (12-10) | First | -- |
| » Lost to Giants (80-57), 3-2 | Candlestick Park (1-5) | 72-62 | Lost 2 |
| » W: John Montefusco (10-6) L: Warren Brusstar (4-3) S: John Curtis (1) | First | -- |
| Monday, September 4 |
| » Lost to Cardinals (60-77), 3-2 | Busch Stadium II (3-5) | 72-63 | Lost 3 |
| » W: Bob Forsch (11-15) L: Randy Lerch (8-8) S: Mark Littell (9) | First | -- |
| » Defeated Cardinals (60-78), 10-2 | Busch Stadium II (4-5) | 73-63 | |
| » W: Jim Lonborg (8-10) L: Silvio Martinez (8-8) | First | -- |
| » Major-league debuts: Terry Kennedy and Mike Ramsey (Cardinals) Todd Cruz (Phillies) |
| Wednesday, September 6 |
| » Defeated Cubs (69-70), 8-1 | Wrigley Field (5-3) | 74-63 | Won 2 |
| » W: Steve Carlton (13-12) L: Rick Reuschel (13-12) | First | -- |
| Thursday, September 7 |
| » Defeated Cubs (69-71), 5-3 | Wrigley Field (6-3) | 75-63 | Won 3 |
| » W: Warren Brusstar (5-3) L: Donnie Moore (9-7) S: Ron Reed (12) | First | -- |
| Friday, September 8 |
| » Defeated Cardinals (61-80), 1-0 | Veteran's Stadium (45-23) | 76-63 | Won 4 |
| » W: Dick Ruthven (13-10) L: Tom Bruno (4-2) | First | -- |
| » Defeated Cardinals (61-81), 2-1 | Veteran's Stadium (46-23) | 77-63 | Won 5 |
| » W: Ron Reed (2-2) L: Dan O'Brien (0-1) | First | -- |
| Saturday, September 9 |
| » Defeated Cardinals (61-82), 6-3 | Veteran's Stadium (47-23) | 78-63 | Won 6 |
| » W: Randy Lerch (9-8) L: Bob Forsch (11-16) | First | -- |
| Sunday, September 10 |
| » Lost to Cardinals (62-82), 8-6 | Veteran's Stadium (47-24) | 78-64 | |
| » W: Mark Littell (2-8) L: Ron Reed (2-3) S: Buddy Schultz (6) | First | -- |
| Monday, September 11 |
| » Defeated Pirates (74-69), 10-3 | Veteran's Stadium (48-24) | 79-64 | |
| » W: Steve Carlton (14-12) L: Don Robinson (12-6) | First | -- |
| Tuesday, September 12 |
| » Lost to Pirates (75-69), 5-1 | Veteran's Stadium (48-25) | 79-65 | |
| » W: John Candelaria (11-11) L: Larry Christenson (11-13) S: Kent Tekulve (29) | First | -- |
| Wednesday, September 13 |
| » Defeated Cubs (73-72), 6-2 | Veteran's Stadium (49-25) | 80-65 | |
| » W: Dick Ruthven (14-10) L: Ray Burris (5-12) | First | -- |
| Thursday, September 14 |
| » Defeated Cubs (73-73), 11-5 | Veteran's Stadium (50-25) | 81-65 | Won 2 |
| » W: Warren Brusstar (6-3) L: Rick Reuschel (14-13) S: Ron Reed (13) | First | -- |
| Friday, September 15 |
| » Lost to Mets (61-87), 5-4 | Veteran's Stadium (50-26) | 81-66 | |
| » W: Dale Murray (9-5) L: Tug McGraw (8-6) | First | -- |
| Saturday, September 16 |
| » Defeated Mets (61-88), 2-1 | Veteran's Stadium (51-26) | 82-66 | |
| » W: Steve Carlton (15-12) L: Dwight Bernard (1-2) | First | -- |
| Sunday, September 17 |
| » Lost to Mets (62-88), 2-0 | Veteran's Stadium (51-27) | 82-67 | |
| » W: Mike Bruhert (4-9) L: Larry Christenson (11-14) | First | -- |
| Tuesday, September 19 |
| » Lost to Expos (71-81), 5-2 | Stade Olympique (2-5) | 82-68 | Lost 2 |
| » W: Scott Sanderson (3-2) L: Dick Ruthven (14-11) S: Mike Garman (13) | First | -- |
| Wednesday, September 20 |
| » Defeated Expos (71-82), 4-2 | Stade Olympique (3-5) | 83-68 | |
| » W: Randy Lerch (10-8) L: Dan Schatzeder (7-6) S: Ron Reed (14) | First | -- |
| Friday, September 22 |
| » Major-league debuts: Pedro Guerrero Brad Gulden and Dave Stewart |
