| Thursday, January 5 |
| Future Pirate Bob Oldis is born in Preston, IA. |
| Sunday, February 5 |
| Future Pirate Don Hoak is born in Roulette, PA. |
| Monday, February 20 |
| Future Pirate Roy Face is born in Stephentown, NY. |
| Thursday, March 15 |
| Future Pirate Nellie King is born in Shenandoah, PA. |
| Friday, April 6 |
| Former Pirate Ike McAuley dies in Des Moines, IA at the age of 37. |
| Tuesday, April 10 |
| » Major-league debuts: Doug Taitt (Red Sox) |
| Wednesday, April 11 |
| » Lost to Cardinals (1-0), 14-7 | Sportsman's Park III (0-1) | 0-1 | |
| » Starters: Ray Kremer vs Jesse Haines | Second | 1 out |
| » Major-league debuts: Glenn Spencer (Pirates) |
| Thursday, April 12 |
| » Lost to Cardinals (2-0), 5-0 | Sportsman's Park III (0-2) | 0-2 | Lost 2 |
| » Starters: Burleigh Grimes vs Pete Alexander | Fourth | 2 out |
| Friday, April 13 |
| » Major-league debuts: Tiny Chaplin Chick Fullis and Al Spohrer (Giants) |
| Saturday, April 14 |
| » Lost to Reds (3-1), 5-0 | Crosley Field (0-1) | 0-3 | Lost 3 |
| » Starters: Johnny Miljus vs Red Lucas | Seventh | 2½ out |
| » Major-league debuts: Erv Brame (Pirates) |
| Sunday, April 15 |
| » Defeated Reds (3-2), 3-2 | Crosley Field (1-1) | 1-3 | |
| » Starters: Joe Dawson vs Dolf Luque | Seventh | 2½ out |
| Monday, April 16 |
| » Defeated Reds (3-3), 8-1 | Crosley Field (2-1) | 2-3 | Won 2 |
| » Starters: Burleigh Grimes vs Eppa Rixey | Fifth | 1½ out |
| Thursday, April 19 |
| » Lost to Cardinals (4-3), 13-10 | Forbes Field (0-1) | 2-4 | |
| » Starters: Fred Frankhouse vs Carmen Hill | Sixth | 2 out |
| Friday, April 20 |
| » Lost to Cardinals (5-3), 6-2 | Forbes Field (0-2) | 2-5 | Lost 2 |
| » Starters: Jesse Haines vs Burleigh Grimes | Eighth | 2½ out |
| Sunday, April 22 |
| » Lost to Cubs (7-5), 3-2 | Wrigley Field (0-1) | 2-6 | Lost 3 |
| » Starters: Johnny Miljus vs Percy Jones | Eighth | 3½ out |
| Monday, April 23 |
| » Defeated Cubs (7-6), 6-0 | Wrigley Field (1-1) | 3-6 | |
| » Starters: Ray Kremer vs Pat Malone | Seventh | 3 out |
| Tuesday, April 24 |
| » Lost to Cubs (8-6), 7-2 | Wrigley Field (1-2) | 3-7 | |
| » Starters: Joe Dawson vs Sheriff Blake | Seventh | 3½ out |
| Wednesday, April 25 |
| » Defeated Cubs (8-7), 10-0 | Wrigley Field (2-2) | 4-7 | |
| » Starters: Burleigh Grimes vs Charlie Root | Sixth | 3 out |
| Thursday, April 26 |
| » Defeated Reds (7-7), 7-2 | Forbes Field (1-2) | 5-7 | Won 2 |
| » Starters: Jim Joe Edwards vs Carmen Hill | Sixth | 2 out |
| Sunday, April 29 |
| » Lost to Reds (8-7), 3-2 | Crosley Field (2-2) | 5-8 | |
| » Starters: Ray Kremer vs Eppa Rixey | Sixth | 4 out |
| Monday, April 30 |
| » Defeated Cubs (9-10), 8-7 | Forbes Field (2-2) | 6-8 | |
| » Starters: Lefty Weinert vs Burleigh Grimes | Sixth | 3 out |
| Tuesday, May 1 |
| » Defeated Cubs (9-11), 4-1 | Forbes Field (3-2) | 7-8 | Won 2 |
| » Starters: Guy Bush vs Carmen Hill | Fifth | 2½ out |
| Wednesday, May 2 |
| » Defeated Cubs (9-12), 9-8 | Forbes Field (4-2) | 8-8 | Won 3 |
| » Starters: Percy Jones vs Johnny Miljus | Fourth | 2½ out |
| Thursday, May 3 |
| » Lost to Braves (7-8), 5-4 | Forbes Field (4-3) | 8-9 | |
| » Starters: Ed Brandt vs Ray Kremer | Fifth | 3 out |
| Friday, May 4 |
| » Defeated Braves (7-9), 13-3 | Forbes Field (5-3) | 9-9 | |
| » Starters: Kent Greenfield vs Burleigh Grimes | Fourth | 3 out |
| Saturday, May 5 |
| » Defeated Braves (7-10), 6-2 | Forbes Field (6-3) | 10-9 | Won 2 |
| » Starters: Bob Smith vs Joe Dawson | Fourth | 2 out |
| Monday, May 7 |
| » Defeated Braves (7-11), 9-4 | Forbes Field (7-3) | 11-9 | Won 3 |
| » Starters: Charlie Robertson vs Johnny Miljus | Third | 1½ out |
| Tuesday, May 8 |
| » Defeated Giants (11-7), 6-5 | Forbes Field (8-3) | 12-9 | Won 4 |
| » Starters: Dutch Henry vs Burleigh Grimes | Third | 1½ out |
| Wednesday, May 9 |
| » Lost to Giants (12-7), 6-0 | Forbes Field (8-4) | 12-10 | |
| » Starters: Virgil Barnes vs Joe Dawson | Third | 1½ out |
| Thursday, May 10 |
| » Lost to Giants (13-7), 5-4 | Forbes Field (8-5) | 12-11 | Lost 2 |
| » Starters: Freddie Fitzsimmons vs Ray Kremer | Fifth | 2½ out |
| Saturday, May 12 |
| » Defeated Dodgers (11-13), 5-4 | Forbes Field (9-5) | 13-11 | |
| » Starters: Watty Clark vs Carmen Hill | Fifth | 1½ out |
| Sunday, May 13 |
| » Lost to Dodgers (12-13), 8-5 | Ebbets Field (0-1) | 13-12 | |
| » Starters: Burleigh Grimes vs Jumbo Elliott | Fifth | 3 out |
| Monday, May 14 |
| » Lost to Dodgers (13-13), 7-6 | Forbes Field (9-6) | 13-13 | Lost 2 |
| » Starters: Ray Moss vs Fred Fussell | Fifth | 4 out |
| Tuesday, May 15 |
| » Lost to Dodgers (14-13), 10-3 | Forbes Field (9-7) | 13-14 | Lost 3 |
| » Starters: Doug McWeeny vs Johnny Miljus | Fifth | 4 out |
| Friday, May 18 |
| » Defeated Phillies (6-21), 6-4 | Forbes Field (10-7) | 14-14 | |
| » Starters: Russ Miller vs Ray Kremer | Sixth | 4½ out |
| Saturday, May 19 |
| » Defeated Phillies (6-22), 3-1 | Forbes Field (11-7) | 15-14 | Won 2 |
| » Starters: Ray Benge vs Carmen Hill | Sixth | 4½ out |
| Sunday, May 20 |
| » Lost to Reds (21-14), 3-2 | Crosley Field (2-3) | 15-15 | |
| » Starters: Burleigh Grimes vs Red Lucas | Sixth | 4½ out |
| Monday, May 21 |
| » Lost to Reds (22-14), 4-3 | Crosley Field (2-4) | 15-16 | Lost 2 |
| » Starters: Joe Dawson vs Eppa Rixey | Sixth | 4 out |
| » Defeated Reds (22-15), 6-3 | Crosley Field (3-4) | 16-16 | |
| » Starters: Fred Fussell vs Jakie May | Sixth | 4 out |
| Tuesday, May 22 |
| » Lost to Reds (23-15), 5-4 | Crosley Field (3-5) | 16-17 | |
| » Starters: Ray Kremer vs Carl Mays | Sixth | 4½ out |
| Wednesday, May 23 |
| » Lost to Reds (24-15), 4-3 | Crosley Field (3-6) | 16-18 | Lost 2 |
| » Starters: Carmen Hill vs Dolf Luque | Sixth | 5½ out |
| Thursday, May 24 |
| » Defeated Cubs (22-16), 6-2 | Forbes Field (12-7) | 17-18 | |
| » Starters: Art Nehf vs Burleigh Grimes | Sixth | 4½ out |
| » Major-league debuts: Ed Holley (Cubs) |
| Friday, May 25 |
| » Lost to Cubs (23-16), 10-3 | Forbes Field (12-8) | 17-19 | |
| » Starters: Charlie Root vs Fred Fussell | Sixth | 5½ out |
| Saturday, May 26 |
| » Lost to Cubs (24-16), 6-1 | Forbes Field (12-9) | 17-20 | Lost 2 |
| » Starters: Pat Malone vs Ray Kremer | Sixth | 6½ out |
| Sunday, May 27 |
| » Lost to Cubs (25-16), 3-0 | Wrigley Field (2-3) | 17-21 | Lost 3 |
| » Starters: Carmen Hill vs Sheriff Blake | Sixth | 7½ out |
| Tuesday, May 29 |
| » Lost to Cardinals (23-18), 7-1 | Forbes Field (12-10) | 17-22 | Lost 4 |
| » Starters: Flint Rhem vs Burleigh Grimes | Sixth | 8 out |
| Wednesday, May 30 |
| » Lost to Cardinals (24-18), 10-1 | Forbes Field (12-11) | 17-23 | Lost 5 |
| » Starters: Bill Sherdel vs Johnny Miljus | Sixth | 10 out |
| » Lost to Cardinals (25-18), 4-3 | Forbes Field (12-12) | 17-24 | Lost 6 |
| » Starters: Syl Johnson vs Ray Kremer | Sixth | 10 out |
| Thursday, May 31 |
| » Defeated Cardinals (25-19), 3-2 | Forbes Field (13-12) | 18-24 | |
| » Starters: Jesse Haines vs Carmen Hill | Sixth | 9½ out |
| Friday, June 1 |
| » Defeated Cubs (26-20), 10-4 | Forbes Field (14-12) | 19-24 | Won 2 |
| » Starters: Sheriff Blake vs Burleigh Grimes | Sixth | 9½ out |
| Saturday, June 2 |
| » Lost to Cubs (27-20), 10-6 | Forbes Field (14-13) | 19-25 | |
| » Starters: Guy Bush vs Johnny Miljus | Sixth | 10½ out |
| Sunday, June 3 |
| » Defeated Dodgers (23-21), 9-7 | Ebbets Field (1-1) | 20-25 | |
| » Starters: Ray Kremer vs Watty Clark | Sixth | 10 out |
| Thursday, June 7 |
| » Defeated Braves (17-26), 8-6 | Braves Field (1-0) | 21-25 | Won 2 |
| » Starters: Carmen Hill vs Kent Greenfield | Sixth | 8 out |
| Friday, June 8 |
| » Lost to Braves (18-26), 9-5 | Braves Field (1-1) | 21-26 | |
| » Starters: Ray Kremer vs Ed Brandt | Sixth | 9 out |
| Saturday, June 9 |
| » Defeated Braves (18-27), 6-2 | Braves Field (2-1) | 22-26 | |
| » Starters: Burleigh Grimes vs Joe Genewich | Sixth | 7½ out |
| » Defeated Braves (18-28), 6-3 | Braves Field (3-1) | 23-26 | Won 2 |
| » Starters: Johnny Miljus vs Charlie Robertson | Sixth | 7½ out |
| Monday, June 11 |
| » Lost to Phillies (10-35), 6-4 | Baker Bowl (0-1) | 23-27 | |
| » Starters: Carmen Hill vs Jimmy Ring | Sixth | 9 out |
| Tuesday, June 12 |
| » Defeated Phillies (10-36), 15-4 | Baker Bowl (1-1) | 24-27 | |
| » Starters: Ray Kremer vs Russ Miller | Sixth | 8 out |
| Wednesday, June 13 |
| » Lost to Phillies (11-36), 4-3 | Baker Bowl (1-2) | 24-28 | |
| » Starters: Burleigh Grimes vs Ray Benge | Sixth | 9 out |
| Thursday, June 14 |
| » Defeated Giants (28-22), 4-3 | Polo Grounds V (1-0) | 25-28 | |
| » Starters: Fred Fussell vs Freddie Fitzsimmons | Sixth | 8½ out |
| Friday, June 15 |
| » Lost to Giants (29-22), 9-1 | Polo Grounds V (1-1) | 25-29 | |
| » Starters: Carmen Hill vs Vic Aldridge | Sixth | 9 out |
| Saturday, June 16 |
| » Lost to Giants (30-22), 4-0 | Polo Grounds V (1-2) | 25-30 | Lost 2 |
| » Starters: Ray Kremer vs Larry Benton | Sixth | 10 out |
| Sunday, June 17 |
| » Defeated Giants (30-23), 6-0 | Polo Grounds V (2-2) | 26-30 | |
| » Starters: Burleigh Grimes vs Dutch Henry | Sixth | 10 out |
| Wednesday, June 20 |
| » Defeated Reds (37-28), 2-1 | Forbes Field (15-13) | 27-30 | Won 2 |
| » Starters: Eppa Rixey vs Ray Kremer | Sixth | 10 out |
| Thursday, June 21 |
| » Lost to Reds (38-28), 5-4 | Forbes Field (15-14) | 27-31 | |
| » Starters: Jakie May vs Carmen Hill | Sixth | 10½ out |
| Friday, June 22 |
| » Defeated Reds (38-29), 11-1 | Forbes Field (16-14) | 28-31 | |
| » Starters: Ray Kolp vs Burleigh Grimes | Sixth | 10½ out |
| Saturday, June 23 |
| » Defeated Reds (38-30), 6-5 | Forbes Field (17-14) | 29-31 | Won 2 |
| » Starters: Dolf Luque vs Bill Burwell | Sixth | 9½ out |
| Sunday, June 24 |
| » Lost to Cubs (37-30), 8-1 | Wrigley Field (2-4) | 29-32 | |
| » Starters: Ray Kremer vs Art Nehf | Sixth | 10½ out |
| Tuesday, June 26 |
| » Defeated Cubs (37-31), 1-0 | Wrigley Field (3-4) | 30-32 | |
| » Starters: Burleigh Grimes vs Sheriff Blake | Sixth | 11 out |
| » Lost to Cubs (38-31), 7-3 | Wrigley Field (3-5) | 30-33 | |
| » Starters: Johnny Miljus vs Percy Jones | Sixth | 11 out |
| Thursday, June 28 |
| » Lost to Cardinals (44-24), 4-3 | Sportsman's Park III (0-3) | 30-34 | Lost 2 |
| » Starters: Carmen Hill vs Bill Sherdel | Sixth | 12 out |
| Friday, June 29 |
| » Lost to Cardinals (45-24), 9-4 | Sportsman's Park III (0-4) | 30-35 | Lost 3 |
| » Starters: Ray Kremer vs Clarence Mitchell | Sixth | 13 out |
| Saturday, June 30 |
| » Defeated Cardinals (45-25), 4-3 | Sportsman's Park III (1-4) | 31-35 | |
| » Starters: Burleigh Grimes vs Pete Alexander | Sixth | 12 out |
| Sunday, July 1 |
| » Defeated Cardinals (45-26), 2-0 | Sportsman's Park III (2-4) | 32-35 | Won 2 |
| » Starters: Fred Fussell vs Jesse Haines | Sixth | 12 out |
| » Lost to Cardinals (46-26), 8-6 | Sportsman's Park III (2-5) | 32-36 | |
| » Starters: Johnny Miljus vs Syl Johnson | Sixth | 12 out |
| Tuesday, July 3 |
| » Lost to Reds (41-34), 9-7 | Forbes Field (17-15) | 32-37 | Lost 2 |
| » Starters: Dolf Luque vs Carmen Hill | Sixth | 12 out |
| Wednesday, July 4 |
| » Lost to Reds (42-34), 6-0 | Forbes Field (17-16) | 32-38 | Lost 3 |
| » Starters: Eppa Rixey vs Joe Dawson | Sixth | 13 out |
| » Lost to Reds (43-34), 11-3 | Forbes Field (17-17) | 32-39 | Lost 4 |
| » Starters: Ray Kolp vs Burleigh Grimes | Sixth | 13 out |
| Friday, July 6 |
| » Lost to Giants (42-27), 11-7 | Forbes Field (17-18) | 32-40 | Lost 5 |
| » Starters: Joe Genewich vs Fred Fussell | Fifth | 13½ out |
| Saturday, July 7 |
| » Defeated Giants (42-28), 8-6 | Forbes Field (18-18) | 33-40 | |
| » Starters: Vic Aldridge vs Carmen Hill | Sixth | 12 out |
| » Defeated Giants (42-29), 5-2 | Forbes Field (19-18) | 34-40 | Won 2 |
| » Starters: Freddie Fitzsimmons vs Erv Brame | Sixth | 12 out |
| Monday, July 9 |
| » Defeated Giants (42-30), 5-3 | Forbes Field (20-18) | 35-40 | Won 3 |
| » Starters: Jim Faulkner vs Burleigh Grimes | Sixth | 13 out |
| Tuesday, July 10 |
| » Defeated Phillies (21-50), 6-5 | Forbes Field (21-18) | 36-40 | Won 4 |
| » Starters: Jimmy Ring vs Ray Kremer | Sixth | 13 out |
| Wednesday, July 11 |
| » Defeated Phillies (21-51), 3-1 | Forbes Field (22-18) | 37-40 | Won 5 |
| » Starters: Ray Benge vs Erv Brame | Sixth | 12 out |
| Saturday, July 14 |
| » Defeated Braves (24-53), 10-0 | Forbes Field (23-18) | 38-40 | Won 6 |
| » Starters: Ed Brandt vs Burleigh Grimes | Sixth | 12 out |
| Monday, July 16 |
| » Defeated Braves (24-54), 8-3 | Forbes Field (24-18) | 39-40 | Won 7 |
| » Starters: Art Delaney vs Ray Kremer | Sixth | 11½ out |
| Tuesday, July 17 |
| » Defeated Braves (24-55), 7-6 | Forbes Field (25-18) | 40-40 | Won 8 |
| » Starters: Bob Smith vs Carmen Hill | Sixth | 11½ out |
| Wednesday, July 18 |
| » Defeated Braves (24-56), 16-3 | Forbes Field (26-18) | 41-40 | Won 9 |
| » Starters: Virgil Barnes vs Burleigh Grimes | Sixth | 11 out |
| Thursday, July 19 |
| » Lost to Dodgers (45-40), 3-0 | Forbes Field (26-19) | 41-41 | |
| » Starters: Doug McWeeny vs Fred Fussell | Sixth | 12 out |
| Friday, July 20 |
| » Lost to Dodgers (46-40), 8-7 | Forbes Field (26-20) | 41-42 | Lost 2 |
| » Starters: Jesse Petty vs Ray Kremer | Sixth | 13 out |
| Saturday, July 21 |
| » Defeated Dodgers (46-41), 7-3 | Forbes Field (27-20) | 42-42 | |
| » Starters: Rube Ehrhardt vs Carmen Hill | Sixth | 11½ out |
| » Defeated Dodgers (46-42), 10-2 | Forbes Field (28-20) | 43-42 | Won 2 |
| » Starters: Jesse Petty vs Lee Meadows | Sixth | 11½ out |
| Sunday, July 22 |
| » Lost to Dodgers (47-42), 5-0 | Ebbets Field (1-2) | 43-43 | |
| » Starters: Burleigh Grimes vs Dazzy Vance | Sixth | 12 out |
| » Defeated Dodgers (47-43), 6-5 | Ebbets Field (2-2) | 44-43 | |
| » Starters: Ray Kremer vs Bill Doak | Sixth | 12 out |
| Monday, July 23 |
| » Defeated Dodgers (47-44), 2-1 | Ebbets Field (3-2) | 45-43 | Won 2 |
| » Starters: Fred Fussell vs Doug McWeeny | Sixth | 11½ out |
| Tuesday, July 24 |
| » Lost to Giants (48-37), 6-3 | Polo Grounds V (2-3) | 45-44 | |
| » Starters: Joe Dawson vs Larry Benton | Sixth | 12½ out |
| Wednesday, July 25 |
| » Lost to Giants (49-37), 6-5 | Polo Grounds V (2-4) | 45-45 | Lost 2 |
| » Starters: Carmen Hill vs Bill Walker | Sixth | 12½ out |
| Thursday, July 26 |
| » Defeated Giants (49-38), 7-5 | Polo Grounds V (3-4) | 46-45 | |
| » Starters: Burleigh Grimes vs Carl Hubbell | Sixth | 12½ out |
| Friday, July 27 |
| » Lost to Giants (50-38), 4-2 | Polo Grounds V (3-5) | 46-46 | |
| » Starters: Fred Fussell vs Freddie Fitzsimmons | Sixth | 12½ out |
| Monday, July 30 |
| » Defeated Braves (27-61), 2-1 | Braves Field (4-1) | 47-46 | |
| » Starters: Ray Kremer vs Ed Brandt | Fifth | 12 out |
| » Defeated Braves (27-62), 6-5 | Braves Field (5-1) | 48-46 | Won 2 |
| » Starters: Carmen Hill vs Kent Greenfield | Fifth | 12 out |
| Future Pirate Bill Hall is born in Moultrie, GA. |
| Tuesday, July 31 |
| » Lost to Braves (28-62), 11-5 | Braves Field (5-2) | 48-47 | |
| » Starters: Lee Meadows vs Bob Smith | Sixth | 13 out |
| Thursday, August 2 |
| » Defeated Phillies (24-67), 18-4 | Baker Bowl (2-2) | 49-47 | |
| » Starters: Burleigh Grimes vs Russ Miller | Sixth | 13 out |
| Friday, August 3 |
| » Defeated Phillies (24-68), 14-6 | Baker Bowl (3-2) | 50-47 | Won 2 |
| » Starters: Fred Fussell vs Les Sweetland | Fifth | 13 out |
| Saturday, August 4 |
| » Defeated Phillies (24-69), 14-8 | Baker Bowl (4-2) | 51-47 | Won 3 |
| » Starters: Ray Kremer vs Ray Benge | Fifth | 12 out |
| » Defeated Phillies (24-70), 11-4 | Baker Bowl (5-2) | 52-47 | Won 4 |
| » Starters: Carmen Hill vs Jimmy Ring | Fifth | 12 out |
| Tuesday, August 7 |
| » Defeated Dodgers (52-52), 4-3 | Ebbets Field (4-2) | 53-47 | Won 5 |
| » Starters: Burleigh Grimes vs Doug McWeeny | Fifth | 11 out |
| » Defeated Dodgers (52-53), 3-2 | Ebbets Field (5-2) | 54-47 | Won 6 |
| » Starters: Fred Fussell vs Bill Doak | Fifth | 11 out |
| Wednesday, August 8 |
| » Defeated Dodgers (52-54), 4-3 | Ebbets Field (6-2) | 55-47 | Won 7 |
| » Starters: Ray Kremer vs Doug McWeeny | Fifth | 10 out |
| Thursday, August 9 |
| » Defeated Cardinals (67-40), 5-4 | Forbes Field (29-20) | 56-47 | Won 8 |
| » Starters: Jesse Haines vs Carmen Hill | Fifth | 9 out |
| Friday, August 10 |
| » Lost to Cardinals (68-40), 2-1 | Forbes Field (29-21) | 56-48 | |
| » Starters: Clarence Mitchell vs Fred Fussell | Fifth | 10 out |
| Saturday, August 11 |
| » Lost to Reds (60-48), 1-0 | Forbes Field (29-22) | 56-49 | Lost 2 |
| » Starters: Red Lucas vs Burleigh Grimes | Fifth | 10 out |
| Monday, August 13 |
| » Defeated Dodgers (54-56), 6-1 | Forbes Field (30-22) | 57-49 | |
| » Starters: Bill Doak vs Ray Kremer | Fifth | 9 out |
| Tuesday, August 14 |
| » Defeated Dodgers (54-57), 4-2 | Forbes Field (31-22) | 58-49 | Won 2 |
| » Starters: Doug McWeeny vs Carmen Hill | Fifth | 9 out |
| Wednesday, August 15 |
| » Lost to Dodgers (55-57), 6-5 | Forbes Field (31-23) | 58-50 | |
| » Starters: Dazzy Vance vs Fred Fussell | Fifth | 10 out |
| Thursday, August 16 |
| » Defeated Dodgers (55-58), 11-6 | Forbes Field (32-23) | 59-50 | |
| » Starters: Jumbo Elliott vs Burleigh Grimes | Fifth | 9 out |
| Friday, August 17 |
| » Defeated Phillies (30-75), 10-3 | Forbes Field (33-23) | 60-50 | Won 2 |
| » Starters: Claude Willoughby vs Ray Kremer | Fifth | 7½ out |
| » Defeated Phillies (30-76), 9-1 | Forbes Field (34-23) | 61-50 | Won 3 |
| » Starters: Les Sweetland vs Erv Brame | Fifth | 7½ out |
| Saturday, August 18 |
| » Defeated Phillies (30-77), 9-0 | Forbes Field (35-23) | 62-50 | Won 4 |
| » Starters: Ray Benge vs Carmen Hill | Fifth | 7 out |
| » Lost to Phillies (31-77), 11-8 | Forbes Field (35-24) | 62-51 | |
| » Starters: Jimmy Ring vs Fred Fussell | Fifth | 7 out |
| Monday, August 20 |
| » Lost to Braves (35-71), 14-11 | Forbes Field (35-25) | 62-52 | Lost 2 |
| » Starters: Bob Smith vs Burleigh Grimes | Fifth | 7 out |
| Tuesday, August 21 |
| » Defeated Braves (35-72), 6-2 | Forbes Field (36-25) | 63-52 | |
| » Starters: Ed Brandt vs Ray Kremer | Fifth | 6 out |
| Wednesday, August 22 |
| » Defeated Braves (35-73), 10-3 | Forbes Field (37-25) | 64-52 | Won 2 |
| » Starters: Kent Greenfield vs Erv Brame | Fifth | 5 out |
| Thursday, August 23 |
| » Lost to Giants (68-45), 6-3 | Forbes Field (37-26) | 64-53 | |
| » Starters: Larry Benton vs Carmen Hill | Fifth | 5½ out |
| » Defeated Giants (68-46), 13-3 | Forbes Field (38-26) | 65-53 | |
| » Starters: Carl Hubbell vs Fred Fussell | Fifth | 5½ out |
| Friday, August 24 |
| » Defeated Giants (68-47), 16-5 | Forbes Field (39-26) | 66-53 | Won 2 |
| » Starters: Joe Genewich vs Burleigh Grimes | Fifth | 5½ out |
| Saturday, August 25 |
| » Defeated Giants (68-48), 7-1 | Forbes Field (40-26) | 67-53 | Won 3 |
| » Starters: Freddie Fitzsimmons vs Ray Kremer | Fifth | 5½ out |
| Former Pirate Snake Wiltse dies in Harrisburg, PA at the age of 57. |
| Sunday, August 26 |
| » Lost to Reds (70-53), 4-3 | Crosley Field (3-7) | 67-54 | |
| » Starters: Erv Brame vs Red Lucas | Fifth | 6½ out |
| Monday, August 27 |
| » Defeated Reds (70-54), 9-4 | Crosley Field (4-7) | 68-54 | |
| » Starters: Fred Fussell vs Dolf Luque | Fifth | 6½ out |
| Tuesday, August 28 |
| » Defeated Phillies (33-82), 9-2 | Forbes Field (41-26) | 69-54 | Won 2 |
| » Starters: Les Sweetland vs Carmen Hill | Fourth | 6 out |
| » Defeated Phillies (33-83), 16-7 | Forbes Field (42-26) | 70-54 | Won 3 |
| » Starters: Ray Benge vs Burleigh Grimes | Fourth | 6 out |
| Wednesday, August 29 |
| » Lost to Phillies (34-83), 4-0 | Forbes Field (42-27) | 70-55 | |
| » Starters: Claude Willoughby vs Erv Brame | Fifth | 6½ out |
| Friday, August 31 |
| » Defeated Cardinals (76-49), 6-5 | Forbes Field (43-27) | 71-55 | |
| » Starters: Pete Alexander vs Ray Kremer | Fourth | 6½ out |
| » Lost to Cardinals (77-49), 6-2 | Forbes Field (43-28) | 71-56 | |
| » Starters: Jesse Haines vs Fred Fussell | Fourth | 6½ out |
| Saturday, September 1 |
| » Lost to Cardinals (78-49), 4-1 | Forbes Field (43-29) | 71-57 | Lost 2 |
| » Starters: Bill Sherdel vs Carmen Hill | Fourth | 7½ out |
| Sunday, September 2 |
| » Lost to Cubs (76-55), 3-2 | Wrigley Field (3-6) | 71-58 | Lost 3 |
| » Starters: Burleigh Grimes vs Pat Malone | Fourth | 8½ out |
| Monday, September 3 |
| » Defeated Cubs (76-56), 16-1 | Forbes Field (44-29) | 72-58 | |
| » Starters: Charlie Root vs Erv Brame | Fourth | 6½ out |
| » Defeated Cubs (76-57), 6-3 | Forbes Field (45-29) | 73-58 | Won 2 |
| » Starters: Hal Carlson vs Ray Kremer | Fourth | 6½ out |
| Tuesday, September 4 |
| » Lost to Cubs (77-57), 9-8 | Forbes Field (45-30) | 73-59 | |
| » Starters: Art Nehf vs Fred Fussell | Fifth | 7 out |
| Thursday, September 6 |
| » Lost to Cardinals (80-51), 4-3 | Sportsman's Park III (2-6) | 73-60 | Lost 2 |
| » Starters: Burleigh Grimes vs Clarence Mitchell | Fifth | 8 out |
| Friday, September 7 |
| » Lost to Cardinals (81-51), 6-3 | Sportsman's Park III (2-7) | 73-61 | Lost 3 |
| » Starters: Ray Kremer vs Jesse Haines | Fifth | 9 out |
| Saturday, September 8 |
| » Defeated Cardinals (81-52), 4-2 | Sportsman's Park III (3-7) | 74-61 | |
| » Starters: Carmen Hill vs Bill Sherdel | Fourth | 8 out |
| Sunday, September 9 |
| » Defeated Cardinals (81-53), 8-7 | Sportsman's Park III (4-7) | 75-61 | Won 2 |
| » Starters: Fred Fussell vs Pete Alexander | Fourth | 7 out |
| Monday, September 10 |
| » Defeated Cubs (80-58), 7-5 | Wrigley Field (4-6) | 76-61 | Won 3 |
| » Starters: Erv Brame vs Art Nehf | Fourth | 6 out |
| Future Pirate Brandy Davis is born in Newark, DE. Future Pirate Bob Garber is born in Hunker, PA. |
| Tuesday, September 11 |
| » Lost to Cubs (81-58), 9-3 | Wrigley Field (4-7) | 76-62 | |
| » Starters: Carmen Hill vs Pat Malone | Fourth | 7 out |
| Friday, September 14 |
| » Defeated Reds (73-64), 4-1 | Forbes Field (46-30) | 77-62 | |
| » Starters: Eppa Rixey vs Burleigh Grimes | Fourth | 7 out |
| Saturday, September 15 |
| » Defeated Reds (73-65), 6-1 | Forbes Field (47-30) | 78-62 | Won 2 |
| » Starters: Ken Ash vs Carmen Hill | Fourth | 7½ out |
| Sunday, September 16 |
| » Defeated Giants (84-57), 1-0 | Polo Grounds V (4-5) | 79-62 | Won 3 |
| » Starters: Fred Fussell vs Larry Benton | Fourth | 7 out |
| Monday, September 17 |
| » Lost to Giants (85-57), 9-2 | Polo Grounds V (4-6) | 79-63 | |
| » Starters: Erv Brame vs Carl Hubbell | Fourth | 8 out |
| Tuesday, September 18 |
| » Lost to Giants (86-57), 3-2 | Polo Grounds V (4-7) | 79-64 | Lost 2 |
| » Starters: Burleigh Grimes vs Freddie Fitzsimmons | Fourth | 9 out |
| Thursday, September 20 |
| » Defeated Phillies (42-102), 6-4 | Baker Bowl (6-2) | 80-64 | |
| » Starters: Carmen Hill vs Claude Willoughby | Fourth | 8½ out |
| Friday, September 21 |
| » Defeated Phillies (42-103), 6-5 | Baker Bowl (7-2) | 81-64 | Won 2 |
| » Starters: Ray Kremer vs Les Sweetland | Fourth | 8 out |
| Saturday, September 22 |
| » Defeated Phillies (42-104), 9-7 | Baker Bowl (8-2) | 82-64 | Won 3 |
| » Starters: Burleigh Grimes vs John Milligan | Fourth | 6½ out |
| » Defeated Phillies (42-105), 5-3 | Baker Bowl (9-2) | 83-64 | Won 4 |
| » Starters: Erv Brame vs Earl Caldwell | Fourth | 6½ out |
| Monday, September 24 |
| » Defeated Braves (49-99), 3-1 | Braves Field (6-2) | 84-64 | Won 5 |
| » Starters: Carmen Hill vs Ben Cantwell | Fourth | 7½ out |
| » Lost to Braves (50-99), 4-2 | Braves Field (6-3) | 84-65 | |
| » Starters: Homer Blankenship vs Bob Smith | Fourth | 7½ out |
| Tuesday, September 25 |
| » Defeated Braves (50-100), 13-8 | Braves Field (7-3) | 85-65 | |
| » Starters: Erv Brame vs Kent Greenfield | Fourth | 7½ out |
| Thursday, September 27 |
| » Lost to Dodgers (75-76), 7-6 | Ebbets Field (6-3) | 85-66 | |
| » Starters: Burleigh Grimes vs Jesse Petty | Fourth | 8½ out |
| » Lost to Dodgers (76-76), 8-1 | Ebbets Field (6-4) | 85-67 | Lost 2 |
| » Starters: Homer Blankenship vs Lou Koupal | Fourth | 8½ out |
| » Major-league debuts: Al Lopez (Dodgers) |
| Sunday, September 30 |
| » Major-league debuts: Bob Weiland (Cardinals) |
| Monday, October 15 |
| Future Pirate Gail Henley is born in Wichita, KS. |
| Thursday, November 15 |
| Future Pirate Gus Bell is born in Louisville, KY. |
Game information provided by Retrosheet (www.retrosheet.org) |