| Thursday, January 6 |
| Future Pirate Phil Masi is born in Chicago, IL. Former Pirate King Cole dies in Bay City, MI at the age of 30. |
| Friday, January 28 |
| Future Pirate Bob Muncrief is born in Madill, OK. |
| Saturday, March 18 |
| Future Pirate Elbie Fletcher is born in Milton, MA. |
| Wednesday, April 12 |
| » Lost to Cardinals (1-0), 2-1 | Robison Field (0-1) | 0-1 | |
| » Starters: Erv Kantlehner vs Bill Doak | Second | 1 out |
| Thursday, April 13 |
| » Defeated Cardinals (1-1), 4-0 | Robison Field (1-1) | 1-1 | |
| » Starters: Babe Adams vs Lee Meadows | Second | ½ out |
| » Major-league debuts: Walter Schmidt (Pirates) |
| Friday, April 14 |
| » Lost to Cardinals (2-1), 5-3 | Robison Field (1-2) | 1-2 | |
| » Starters: Bob Harmon vs Hi Jasper | Fourth | 1 out |
| Saturday, April 15 |
| » Defeated Cardinals (2-2), 6-1 | Robison Field (2-2) | 2-2 | |
| » Starters: Al Mamaux vs Charley Hall | Fourth | 1 out |
| Sunday, April 16 |
| » Lost to Reds (4-1), 6-1 | Crosley Field (0-1) | 2-3 | |
| » Starters: Frank Miller vs Fred Toney | Fifth | 1½ out |
| Monday, April 17 |
| » Defeated Reds (4-2), 10-1 | Crosley Field (1-1) | 3-3 | |
| » Starters: Erv Kantlehner vs Gene Dale | Fourth | 2 out |
| Tuesday, April 18 |
| » Lost to Reds (5-2), 4-3 | Crosley Field (1-2) | 3-4 | |
| » Starters: Babe Adams vs Limb McKenry | Fifth | 1½ out |
| Thursday, April 20 |
| » Lost to Cardinals (4-3), 5-0 | Forbes Field (0-1) | 3-5 | Lost 2 |
| » Starters: Lee Meadows vs Al Mamaux | Sixth | 3 out |
| Friday, April 21 |
| » Defeated Cardinals (4-4), 8-0 | Forbes Field (1-1) | 4-5 | |
| » Starters: Bob Steele vs Bob Harmon | Fifth | 3 out |
| Sunday, April 23 |
| » Lost to Cubs (5-4), 3-0 | Wrigley Field (0-1) | 4-6 | |
| » Starters: Erv Kantlehner vs George McConnell | Sixth | 3½ out |
| Wednesday, April 26 |
| » Lost to Cubs (6-4), 6-3 | Wrigley Field (0-2) | 4-7 | Lost 2 |
| » Starters: Babe Adams vs Jimmy Lavender | Seventh | 3½ out |
| Friday, April 28 |
| » Defeated Reds (6-7), 5-1 | Forbes Field (2-1) | 5-7 | |
| » Starters: Pete Schneider vs Bob Harmon | Sixth | 3 out |
| Saturday, April 29 |
| » Defeated Reds (6-8), 2-1 | Forbes Field (3-1) | 6-7 | Won 2 |
| » Starters: Fred Toney vs Al Mamaux | Sixth | 2½ out |
| Sunday, April 30 |
| » Lost to Reds (7-8), 8-7 | Crosley Field (1-3) | 6-8 | |
| » Starters: Erv Kantlehner vs Earl Moseley | Seventh | 3 out |
| Monday, May 1 |
| » Lost to Reds (8-8), 3-0 | Crosley Field (1-4) | 6-9 | Lost 2 |
| » Starters: Babe Adams vs Clarence Mitchell | Seventh | 3 out |
| Thursday, May 4 |
| » Defeated Cubs (8-7), 4-2 | Forbes Field (4-1) | 7-9 | |
| » Starters: Jimmy Lavender vs Wilbur Cooper | Seventh | 3 out |
| Friday, May 5 |
| » Lost to Cubs (9-7), 5-3 | Forbes Field (4-2) | 7-10 | |
| » Starters: George McConnell vs Bob Harmon | Seventh | 3½ out |
| Saturday, May 6 |
| » Lost to Cubs (10-7), 2-1 | Forbes Field (4-3) | 7-11 | Lost 2 |
| » Starters: Hippo Vaughn vs Babe Adams | Seventh | 4½ out |
| Sunday, May 7 |
| » Defeated Cubs (10-8), 1-0 | Wrigley Field (1-2) | 8-11 | |
| » Starters: Erv Kantlehner vs Jimmy Lavender | Seventh | 4 out |
| Monday, May 8 |
| » Lost to Cubs (11-8), 2-1 | Wrigley Field (1-3) | 8-12 | |
| » Starters: Wilbur Cooper vs George McConnell | Seventh | 4½ out |
| » Defeated Cubs (11-9), 6-4 | Wrigley Field (2-3) | 9-12 | |
| » Starters: Al Mamaux vs Gene Packard | Seventh | 4½ out |
| Tuesday, May 9 |
| » Lost to Giants (3-13), 13-5 | Forbes Field (4-4) | 9-13 | |
| » Starters: Jeff Tesreau vs Bob Harmon | Seventh | 5 out |
| Wednesday, May 10 |
| » Lost to Giants (4-13), 7-1 | Forbes Field (4-5) | 9-14 | Lost 2 |
| » Starters: Fred Anderson vs Babe Adams | Seventh | 6 out |
| Thursday, May 11 |
| » Lost to Giants (5-13), 3-2 | Forbes Field (4-6) | 9-15 | Lost 3 |
| » Starters: Pol Perritt vs Erv Kantlehner | Seventh | 6 out |
| Friday, May 12 |
| » Lost to Giants (6-13), 3-2 | Forbes Field (4-7) | 9-16 | Lost 4 |
| » Starters: Christy Mathewson vs Al Mamaux | Seventh | 6½ out |
| Future Pirate Hank Borowy is born in Bloomfield, NJ. |
| Saturday, May 13 |
| » Defeated Braves (12-7), 5-3 | Forbes Field (5-7) | 10-16 | |
| » Starters: Ed Reulbach vs Babe Adams | Sixth | 5½ out |
| Monday, May 15 |
| » Defeated Braves (12-8), 8-7 | Forbes Field (6-7) | 11-16 | Won 2 |
| » Starters: Dick Rudolph vs Wilbur Cooper | Sixth | 6 out |
| Thursday, May 18 |
| » Lost to Phillies (14-10), 3-0 | Forbes Field (6-8) | 11-17 | |
| » Starters: Pete Alexander vs Erv Kantlehner | Seventh | 5 out |
| Friday, May 19 |
| » Defeated Phillies (14-11), 4-2 | Forbes Field (7-8) | 12-17 | |
| » Starters: George McQuillan vs Al Mamaux | Eighth | 5 out |
| Saturday, May 20 |
| » Lost to Phillies (15-11), 5-1 | Forbes Field (7-9) | 12-18 | |
| » Starters: Al Demaree vs Babe Adams | Eighth | 6 out |
| Tuesday, May 23 |
| » Lost to Dodgers (16-9), 6-0 | Forbes Field (7-10) | 12-19 | Lost 2 |
| » Starters: Jeff Pfeffer vs Erv Kantlehner | Seventh | 7 out |
| Wednesday, May 24 |
| » Lost to Dodgers (17-9), 3-2 | Forbes Field (7-11) | 12-20 | Lost 3 |
| » Starters: Larry Cheney vs Al Mamaux | Seventh | 8 out |
| Thursday, May 25 |
| » Defeated Dodgers (17-10), 5-0 | Forbes Field (8-11) | 13-20 | |
| » Starters: Wheezer Dell vs Frank Miller | Sixth | 7 out |
| Friday, May 26 |
| » Defeated Cardinals (16-20), 6-5 | Robison Field (3-2) | 14-20 | Won 2 |
| » Starters: Wilbur Cooper vs Red Ames | Seventh | 6½ out |
| Sunday, May 28 |
| » Defeated Cardinals (16-21), 4-0 | Robison Field (4-2) | 15-20 | Won 3 |
| » Starters: Frank Miller vs Bill Doak | Seventh | 6 out |
| » Defeated Cardinals (16-22), 4-1 | Robison Field (5-2) | 16-20 | Won 4 |
| » Starters: Al Mamaux vs Lee Meadows | Seventh | 6 out |
| Monday, May 29 |
| » Lost to Reds (19-21), 6-1 | Forbes Field (8-12) | 16-21 | |
| » Starters: Clarence Mitchell vs Elmer Jacobs | Seventh | 7 out |
| Tuesday, May 30 |
| » Defeated Reds (19-22), 9-8 | Forbes Field (9-12) | 17-21 | |
| » Starters: Earl Moseley vs Al Mamaux | Seventh | 6½ out |
| Wednesday, May 31 |
| » Lost to Reds (20-22), 5-2 | Forbes Field (9-13) | 17-22 | |
| » Starters: Fred Toney vs Frank Miller | Seventh | 7½ out |
| Former Pirate Bud Sharpe dies in Haddock, GA at the age of 35. |
| Thursday, June 1 |
| » Defeated Reds (20-23), 8-4 | Forbes Field (10-13) | 18-22 | |
| » Starters: Pete Schneider vs Bob Harmon | Seventh | 6 out |
| Friday, June 2 |
| » Defeated Dodgers (22-15), 5-2 | Ebbets Field (1-0) | 19-22 | Won 2 |
| » Starters: Al Mamaux vs Ed Appleton | Seventh | 5 out |
| Monday, June 5 |
| » Lost to Dodgers (23-15), 3-2 | Ebbets Field (1-1) | 19-23 | |
| » Starters: Frank Miller vs Sherry Smith | Seventh | 6 out |
| Tuesday, June 6 |
| » Defeated Giants (22-18), 3-2 | Polo Grounds V (1-0) | 20-23 | |
| » Starters: Al Mamaux vs Rube Benton | Sixth | 6 out |
| Monday, June 12 |
| » Lost to Phillies (24-19), 2-1 | Baker Bowl (0-1) | 20-24 | |
| » Starters: Al Mamaux vs Pete Alexander | Seventh | 6½ out |
| Tuesday, June 13 |
| » Lost to Phillies (25-19), 5-3 | Baker Bowl (0-2) | 20-25 | Lost 2 |
| » Starters: Frank Miller vs Al Demaree | Seventh | 7½ out |
| Wednesday, June 14 |
| » Lost to Phillies (26-19), 3-2 | Baker Bowl (0-3) | 20-26 | Lost 3 |
| » Starters: Elmer Jacobs vs Eppa Rixey | Seventh | 8½ out |
| Thursday, June 15 |
| » Defeated Braves (21-23), 2-1 | Braves Field (1-0) | 21-26 | |
| » Starters: Al Mamaux vs Ed Reulbach | Seventh | 8½ out |
| Future Pirate Bud Stewart is born in Sacramento, CA. |
| Friday, June 16 |
| » Lost to Braves (22-23), 2-0 | Braves Field (1-1) | 21-27 | |
| » Starters: Erv Kantlehner vs Tom Hughes | Seventh | 9 out |
| Tuesday, June 20 |
| » Lost to Cardinals (23-32), 10-6 | Forbes Field (10-14) | 21-28 | Lost 2 |
| » Starters: Bill Doak vs Al Mamaux | Seventh | 8½ out |
| Thursday, June 22 |
| » Defeated Cardinals (23-33), 8-4 | Forbes Field (11-14) | 22-28 | |
| » Starters: Steamboat Williams vs Elmer Jacobs | Sixth | 9 out |
| Friday, June 23 |
| » Lost to Cardinals (24-33), 8-7 | Forbes Field (11-15) | 22-29 | |
| » Starters: Lee Meadows vs Erv Kantlehner | Sixth | 9 out |
| Saturday, June 24 |
| » Defeated Cardinals (24-34), 4-3 | Forbes Field (12-15) | 23-29 | |
| » Starters: Bill Doak vs Al Mamaux | Sixth | 9 out |
| » Defeated Cardinals (24-35), 5-2 | Forbes Field (13-15) | 24-29 | Won 2 |
| » Starters: Charley Hall vs Frank Miller | Sixth | 9 out |
| Sunday, June 25 |
| » Defeated Cubs (27-31), 8-3 | Wrigley Field (3-3) | 25-29 | Won 3 |
| » Starters: Erv Kantlehner vs George McConnell | Sixth | 8½ out |
| Tuesday, June 27 |
| » Lost to Cubs (28-31), 1-0 | Wrigley Field (3-4) | 25-30 | |
| » Starters: Wilbur Cooper vs Mike Prendergast | Seventh | 9 out |
| » Lost to Cubs (29-31), 10-4 | Wrigley Field (3-5) | 25-31 | Lost 2 |
| » Starters: Babe Adams vs Tom Seaton | Seventh | 9 out |
| Wednesday, June 28 |
| » Defeated Cubs (29-32), 3-2 | Wrigley Field (4-5) | 26-31 | |
| » Starters: Al Mamaux vs Jimmy Lavender | Sixth | 8½ out |
| » Defeated Cubs (29-33), 3-2 | Wrigley Field (5-5) | 27-31 | Won 2 |
| » Starters: Frank Miller vs George McConnell | Sixth | 8½ out |
| Friday, June 30 |
| » Defeated Reds (28-35), 3-2 | Crosley Field (2-4) | 28-31 | Won 3 |
| » Starters: Bob Harmon vs Pete Schneider | Fifth | 8 out |
| Saturday, July 1 |
| » Defeated Reds (28-36), 2-1 | Crosley Field (3-4) | 29-31 | Won 4 |
| » Starters: Al Mamaux vs Elmer Knetzer | Fifth | 6½ out |
| Sunday, July 2 |
| » Lost to Reds (29-36), 3-2 | Crosley Field (3-5) | 29-32 | |
| » Starters: Frank Miller vs Fred Toney | Fifth | 6½ out |
| » Defeated Reds (29-37), 6-1 | Crosley Field (4-5) | 30-32 | |
| » Starters: Elmer Jacobs vs Gene Dale | Fifth | 6½ out |
| Monday, July 3 |
| » Lost to Cubs (33-35), 3-2 | Forbes Field (13-16) | 30-33 | |
| » Starters: Tom Seaton vs Wilbur Cooper | Sixth | 7½ out |
| Tuesday, July 4 |
| » Lost to Cubs (34-35), 5-0 | Forbes Field (13-17) | 30-34 | Lost 2 |
| » Starters: Hippo Vaughn vs Erv Kantlehner | Fifth | 8½ out |
| » Defeated Cubs (34-36), 1-0 | Forbes Field (14-17) | 31-34 | |
| » Starters: Mike Prendergast vs Al Mamaux | Fifth | 8½ out |
| Wednesday, July 5 |
| » Lost to Cubs (35-36), 4-3 | Forbes Field (14-18) | 31-35 | |
| » Starters: Claude Hendrix vs Frank Miller | Sixth | 9 out |
| Thursday, July 6 |
| » Lost to Giants (31-33), 12-6 | Forbes Field (14-19) | 31-36 | Lost 2 |
| » Starters: Pol Perritt vs Wilbur Cooper | Sixth | 9½ out |
| Friday, July 7 |
| » Defeated Giants (31-34), 5-2 | Forbes Field (15-19) | 32-36 | |
| » Starters: Fred Anderson vs Elmer Jacobs | Sixth | 9½ out |
| Saturday, July 8 |
| » Lost to Giants (32-34), 6-4 | Forbes Field (15-20) | 32-37 | |
| » Starters: Rube Benton vs Al Mamaux | Sixth | 10½ out |
| Monday, July 10 |
| » Defeated Giants (32-35), 7-1 | Forbes Field (16-20) | 33-37 | |
| » Starters: Rube Schauer vs Frank Miller | Sixth | 9½ out |
| Tuesday, July 11 |
| » Defeated Braves (36-30), 3-2 | Forbes Field (17-20) | 34-37 | Won 2 |
| » Starters: Tom Hughes vs Erv Kantlehner | Fifth | 9½ out |
| Wednesday, July 12 |
| » Lost to Braves (37-30), 6-5 | Forbes Field (17-21) | 34-38 | |
| » Starters: Dick Rudolph vs Al Mamaux | Fifth | 10 out |
| Friday, July 14 |
| » Lost to Braves (38-30), 3-0 | Forbes Field (17-22) | 34-39 | Lost 2 |
| » Starters: Pat Ragan vs Bob Harmon | Sixth | 10 out |
| Saturday, July 15 |
| » Lost to Phillies (41-32), 4-0 | Forbes Field (17-23) | 34-40 | Lost 3 |
| » Starters: Pete Alexander vs Elmer Jacobs | Sixth | 9½ out |
| » Defeated Phillies (41-33), 7-5 | Forbes Field (18-23) | 35-40 | |
| » Starters: George Chalmers vs Al Mamaux | Sixth | 9½ out |
| Tuesday, July 18 |
| Future Pirate Johnny Hopp is born in Hastings, NE. |
| Wednesday, July 19 |
| » Defeated Dodgers (45-31), 1-0 | Forbes Field (19-23) | 36-40 | Won 2 |
| » Starters: Jeff Pfeffer vs Erv Kantlehner | Fifth | 8 out |
| » Defeated Dodgers (45-32), 2-1 | Forbes Field (20-23) | 37-40 | Won 3 |
| » Starters: Larry Cheney vs Frank Miller | Fifth | 8 out |
| Saturday, July 22 |
| » Lost to Dodgers (46-32), 7-1 | Forbes Field (20-24) | 37-41 | |
| » Starters: Jeff Pfeffer vs Erv Kantlehner | Sixth | 10 out |
| » Lost to Dodgers (47-32), 3-2 | Forbes Field (20-25) | 37-42 | Lost 2 |
| » Starters: Jack Coombs vs Elmer Jacobs | Sixth | 10 out |
| Monday, July 24 |
| » Defeated Phillies (44-36), 9-1 | Forbes Field (21-25) | 38-42 | |
| » Starters: Al Demaree vs Al Mamaux | Sixth | 9½ out |
| Wednesday, July 26 |
| » Lost to Phillies (45-36), 7-1 | Baker Bowl (0-4) | 38-43 | |
| » Starters: Babe Adams vs Pete Alexander | Fifth | 9½ out |
| » Defeated Phillies (45-37), 5-2 | Baker Bowl (1-4) | 39-43 | |
| » Starters: Frank Miller vs Eppa Rixey | Fifth | 9½ out |
| Thursday, July 27 |
| » Lost to Phillies (46-37), 5-4 | Baker Bowl (1-5) | 39-44 | |
| » Starters: Bob Harmon vs George Chalmers | Sixth | 10½ out |
| Friday, July 28 |
| » Lost to Phillies (47-37), 5-2 | Baker Bowl (1-6) | 39-45 | Lost 2 |
| » Starters: Elmer Jacobs vs Chief Bender | Sixth | 11½ out |
| Saturday, July 29 |
| » Lost to Giants (42-43), 4-3 | Polo Grounds V (1-1) | 39-46 | Lost 3 |
| » Starters: Al Mamaux vs Pol Perritt | Sixth | 12½ out |
| » Lost to Giants (43-43), 5-0 | Polo Grounds V (1-2) | 39-47 | Lost 4 |
| » Starters: Erv Kantlehner vs Fred Anderson | Sixth | 12½ out |
| Monday, July 31 |
| » Lost to Giants (44-43), 7-0 | Polo Grounds V (1-3) | 39-48 | Lost 5 |
| » Starters: Frank Miller vs Slim Sallee | Sixth | 14½ out |
| » Lost to Giants (45-43), 7-0 | Polo Grounds V (1-4) | 39-49 | Lost 6 |
| » Starters: Elmer Jacobs vs Jeff Tesreau | Sixth | 14½ out |
| Tuesday, August 1 |
| » Defeated Giants (45-44), 4-3 | Polo Grounds V (2-4) | 40-49 | |
| » Starters: Wilbur Cooper vs Fred Anderson | Sixth | 14½ out |
| Wednesday, August 2 |
| » Lost to Giants (46-44), 6-2 | Polo Grounds V (2-5) | 40-50 | |
| » Starters: Al Mamaux vs Rube Benton | Sixth | 15½ out |
| Thursday, August 3 |
| » Lost to Dodgers (56-34), 7-2 | Ebbets Field (1-2) | 40-51 | Lost 2 |
| » Starters: Frank Miller vs Larry Cheney | Sixth | 16½ out |
| Friday, August 4 |
| » Lost to Dodgers (57-34), 2-0 | Ebbets Field (1-3) | 40-52 | Lost 3 |
| » Starters: Bob Harmon vs Sherry Smith | Seventh | 17½ out |
| Saturday, August 5 |
| » Lost to Dodgers (58-34), 4-0 | Ebbets Field (1-4) | 40-53 | Lost 4 |
| » Starters: Wilbur Cooper vs Rube Marquard | Seventh | 17½ out |
| » Defeated Dodgers (58-35), 7-1 | Ebbets Field (2-4) | 41-53 | |
| » Starters: Al Mamaux vs Jeff Pfeffer | Seventh | 17½ out |
| Wednesday, August 9 |
| » Major-league debuts: George Smith (Giants) |
| Friday, August 11 |
| » Defeated Braves (55-39), 2-1 | Braves Field (2-1) | 42-53 | Won 2 |
| » Starters: Frank Miller vs Jesse Barnes | Sixth | 19 out |
| » Lost to Braves (56-39), 4-1 | Braves Field (2-2) | 42-54 | |
| » Starters: Al Mamaux vs Lefty Tyler | Sixth | 19 out |
| Saturday, August 12 |
| » Defeated Cubs (46-57), 3-0 | Forbes Field (22-25) | 43-54 | |
| » Starters: Jimmy Lavender vs Wilbur Cooper | Sixth | 17½ out |
| Sunday, August 13 |
| » Lost to Cardinals (47-61), 9-8 | Robison Field (5-3) | 43-55 | |
| » Starters: Elmer Jacobs vs Bob Steele | Fifth | 17½ out |
| » Defeated Cardinals (47-62), 9-5 | Robison Field (6-3) | 44-55 | |
| » Starters: Bob Harmon vs Milt Watson | Fifth | 17½ out |
| » Major-league debuts: Bill Evans (Pirates) |
| Tuesday, August 15 |
| » Defeated Cardinals (47-63), 1-0 | Robison Field (7-3) | 45-55 | Won 2 |
| » Starters: Bob Harmon vs Lee Meadows | Fifth | 16½ out |
| » Defeated Cardinals (47-64), 2-1 | Robison Field (8-3) | 46-55 | Won 3 |
| » Starters: Wilbur Cooper vs Bill Doak | Fifth | 16½ out |
| Thursday, August 17 |
| » Lost to Dodgers (63-38), 5-1 | Forbes Field (22-26) | 46-56 | |
| » Starters: Jeff Pfeffer vs Al Mamaux | Fifth | 17½ out |
| Friday, August 18 |
| » Lost to Dodgers (64-38), 6-0 | Forbes Field (22-27) | 46-57 | Lost 2 |
| » Starters: Larry Cheney vs Bob Harmon | Sixth | 18½ out |
| Saturday, August 19 |
| » Defeated Dodgers (64-39), 2-1 | Forbes Field (23-27) | 47-57 | |
| » Starters: Sherry Smith vs Wilbur Cooper | Sixth | 18½ out |
| » Lost to Dodgers (65-39), 1-0 | Forbes Field (23-28) | 47-58 | |
| » Starters: Rube Marquard vs Erv Kantlehner | Sixth | 18½ out |
| Monday, August 21 |
| » Defeated Phillies (63-43), 6-3 | Forbes Field (24-28) | 48-58 | |
| » Starters: Pete Alexander vs Elmer Jacobs | Fifth | 17½ out |
| » Defeated Phillies (63-44), 2-1 | Forbes Field (25-28) | 49-58 | Won 2 |
| » Starters: Al Demaree vs Bill Evans | Fifth | 17½ out |
| » Major-league debuts: Hooks Warner (Pirates) |
| Future Pirate Murry Dickson is born in Tracy, MO. |
| Tuesday, August 22 |
| » Lost to Phillies (64-44), 6-2 | Forbes Field (25-29) | 49-59 | |
| » Starters: Erskine Mayer vs Bob Harmon | Fifth | 18 out |
| » Defeated Phillies (64-45), 9-7 | Forbes Field (26-29) | 50-59 | |
| » Starters: Chief Bender vs Wilbur Cooper | Fifth | 18 out |
| Wednesday, August 23 |
| » Defeated Phillies (64-46), 2-1 | Forbes Field (27-29) | 51-59 | Won 2 |
| » Starters: Eppa Rixey vs Erv Kantlehner | Fifth | 17 out |
| Thursday, August 24 |
| » Defeated Giants (53-57), 10-1 | Forbes Field (28-29) | 52-59 | Won 3 |
| » Starters: Jeff Tesreau vs Elmer Jacobs | Fifth | 16 out |
| Friday, August 25 |
| » Lost to Giants (54-57), 6-2 | Forbes Field (28-30) | 52-60 | |
| » Starters: Slim Sallee vs Bob Harmon | Fifth | 17 out |
| » Major-league debuts: Carson Bigbee (Pirates) |
| Saturday, August 26 |
| » Tied Giants, 1-1 | Forbes Field (28-30) | 52-60 | |
| » Starters: Rube Benton vs Wilbur Cooper | Fifth | 16½ out |
| Monday, August 28 |
| » Defeated Braves (65-44), 5-1 | Forbes Field (29-30) | 53-60 | |
| » Starters: Dick Rudolph vs Al Mamaux | Fifth | 16½ out |
| » Lost to Braves (66-44), 8-2 | Forbes Field (29-31) | 53-61 | |
| » Starters: Frank Allen vs Erv Kantlehner | Fifth | 16½ out |
| Tuesday, August 29 |
| » Lost to Braves (67-44), 6-1 | Forbes Field (29-32) | 53-62 | Lost 2 |
| » Starters: Lefty Tyler vs Elmer Jacobs | Fifth | 18 out |
| » Lost to Braves (68-44), 9-5 | Forbes Field (29-33) | 53-63 | Lost 3 |
| » Starters: Lefty Tyler vs Bill Evans | Fifth | 18 out |
| Wednesday, August 30 |
| » Lost to Braves (69-44), 1-0 | Forbes Field (29-34) | 53-64 | Lost 4 |
| » Starters: Dick Rudolph vs Wilbur Cooper | Fifth | 18½ out |
| » Defeated Braves (69-45), 7-6 | Forbes Field (30-34) | 54-64 | |
| » Starters: Frank Allen vs Frank Miller | Fifth | 18½ out |
| Future Pirate Johnny Lindell is born in Greeley, CO. |
| Thursday, August 31 |
| » Defeated Braves (69-46), 3-2 | Forbes Field (31-34) | 55-64 | Won 2 |
| » Starters: Art Nehf vs Al Mamaux | Fifth | 18 out |
| Friday, September 1 |
| » Lost to Reds (47-78), 6-3 | Forbes Field (31-35) | 55-65 | |
| » Starters: Fred Toney vs Erv Kantlehner | Fifth | 17½ out |
| Saturday, September 2 |
| » Defeated Reds (47-79), 4-3 | Forbes Field (32-35) | 56-65 | |
| » Starters: Elmer Knetzer vs Bob Harmon | Fifth | 17 out |
| » Lost to Reds (48-79), 7-2 | Forbes Field (32-36) | 56-66 | |
| » Starters: Earl Moseley vs Bill Evans | Fifth | 17 out |
| Sunday, September 3 |
| » Lost to Reds (49-79), 7-6 | Crosley Field (4-6) | 56-67 | Lost 2 |
| » Starters: Al Mamaux vs Clarence Mitchell | Sixth | 17½ out |
| Monday, September 4 |
| » Defeated Cardinals (56-72), 7-0 | Forbes Field (33-36) | 57-67 | |
| » Starters: Lee Meadows vs Frank Miller | Fifth | 16 out |
| » Defeated Cardinals (56-73), 2-0 | Forbes Field (34-36) | 58-67 | Won 2 |
| » Starters: Milt Watson vs Wilbur Cooper | Fifth | 16 out |
| Wednesday, September 6 |
| » Defeated Cardinals (56-74), 3-2 | Forbes Field (35-36) | 59-67 | Won 3 |
| » Starters: Bob Steele vs Elmer Jacobs | Fifth | 15½ out |
| » Defeated Cardinals (56-75), 6-3 | Forbes Field (36-36) | 60-67 | Won 4 |
| » Starters: Red Ames vs Bob Harmon | Fifth | 15½ out |
| » Major-league debuts: Jack Scott (Pirates) |
| Thursday, September 7 |
| » Defeated Cubs (59-71), 5-4 | Forbes Field (37-36) | 61-67 | Won 5 |
| » Starters: Gene Packard vs Al Mamaux | Fifth | 16 out |
| Friday, September 8 |
| Future Pirate Jim Bagby Jr. is born in Cleveland, OH. |
| Saturday, September 9 |
| » Lost to Cubs (60-71), 3-0 | Forbes Field (37-37) | 61-68 | |
| » Starters: Hippo Vaughn vs Erv Kantlehner | Fifth | 16½ out |
| » Lost to Cubs (61-71), 2-0 | Forbes Field (37-38) | 61-69 | Lost 2 |
| » Starters: Jimmy Lavender vs Wilbur Cooper | Fifth | 16½ out |
| Sunday, September 10 |
| » Defeated Cubs (61-72), 8-7 | Wrigley Field (6-5) | 62-69 | |
| » Starters: Frank Miller vs Gene Packard | Fifth | 16 out |
| » Major-league debuts: Burleigh Grimes (Pirates) |
| Tuesday, September 12 |
| » Lost to Dodgers (77-52), 6-0 | Ebbets Field (2-5) | 62-70 | |
| » Starters: Bill Evans vs Jeff Pfeffer | Fifth | 15½ out |
| » Defeated Dodgers (77-53), 2-1 | Ebbets Field (3-5) | 63-70 | |
| » Starters: Al Mamaux vs Jack Coombs | Fifth | 15½ out |
| Wednesday, September 13 |
| » Defeated Dodgers (77-54), 6-3 | Ebbets Field (4-5) | 64-70 | Won 2 |
| » Starters: Wilbur Cooper vs Sherry Smith | Fourth | 14½ out |
| Thursday, September 14 |
| » Lost to Dodgers (78-54), 3-2 | Ebbets Field (4-6) | 64-71 | |
| » Starters: Burleigh Grimes vs Larry Cheney | Fifth | 15½ out |
| Friday, September 15 |
| » Lost to Dodgers (79-54), 8-1 | Ebbets Field (4-7) | 64-72 | Lost 2 |
| » Starters: Elmer Jacobs vs Rube Marquard | Fifth | 16½ out |
| Saturday, September 16 |
| » Lost to Giants (69-62), 8-2 | Polo Grounds V (2-6) | 64-73 | Lost 3 |
| » Starters: Al Mamaux vs Rube Benton | Fifth | 18 out |
| » Lost to Giants (70-62), 4-3 | Polo Grounds V (2-7) | 64-74 | Lost 4 |
| » Starters: Wilbur Cooper vs Fred Anderson | Fifth | 18 out |
| Monday, September 18 |
| » Lost to Giants (71-62), 2-0 | Polo Grounds V (2-8) | 64-75 | Lost 5 |
| » Starters: Frank Miller vs Ferdie Schupp | Fifth | 18½ out |
| » Tied Giants, 1-1 | Polo Grounds V (2-8) | 64-75 | |
| » Starters: Burleigh Grimes vs Pol Perritt | Fifth | 18½ out |
| Tuesday, September 19 |
| » Lost to Giants (72-62), 9-2 | Polo Grounds V (2-9) | 64-76 | Lost 6 |
| » Starters: Elmer Jacobs vs Fred Anderson | Fifth | 20 out |
| » Lost to Giants (73-62), 5-1 | Polo Grounds V (2-10) | 64-77 | Lost 7 |
| » Starters: Bill Evans vs Jeff Tesreau | Fifth | 20 out |
| Wednesday, September 20 |
| » Lost to Phillies (81-56), 7-0 | Baker Bowl (1-7) | 64-78 | Lost 8 |
| » Starters: Wilbur Cooper vs Al Demaree | Fifth | 21½ out |
| » Lost to Phillies (82-56), 3-2 | Baker Bowl (1-8) | 64-79 | Lost 9 |
| » Starters: Al Mamaux vs Al Demaree | Fifth | 21½ out |
| » Major-league debuts: Lee King (Pirates) |
| Thursday, September 21 |
| » Defeated Phillies (82-57), 8-3 | Baker Bowl (2-8) | 65-79 | |
| » Starters: Burleigh Grimes vs Eppa Rixey | Fifth | 21½ out |
| Friday, September 22 |
| » Lost to Phillies (83-57), 7-4 | Baker Bowl (2-9) | 65-80 | |
| » Starters: Bill Evans vs Erskine Mayer | Fifth | 22½ out |
| Saturday, September 23 |
| » Lost to Braves (79-58), 4-2 | Braves Field (2-3) | 65-81 | Lost 2 |
| » Starters: Al Mamaux vs Pat Ragan | Fifth | 23 out |
| » Tied Braves, 1-1 | Braves Field (2-3) | 65-81 | |
| » Starters: Wilbur Cooper vs Dick Rudolph | Fifth | 23 out |
| Monday, September 25 |
| » Lost to Braves (80-58), 5-0 | Braves Field (2-4) | 65-82 | Lost 3 |
| » Starters: Burleigh Grimes vs Lefty Tyler | Fifth | 24 out |
| » Lost to Braves (81-58), 3-2 | Braves Field (2-5) | 65-83 | Lost 4 |
| » Starters: Al Mamaux vs Ed Reulbach | Fifth | 24 out |
| Tuesday, September 26 |
| » Lost to Braves (82-58), 3-0 | Braves Field (2-6) | 65-84 | Lost 5 |
| » Starters: Bill Evans vs Art Nehf | Sixth | 25½ out |
| » Lost to Braves (83-58), 2-1 | Braves Field (2-7) | 65-85 | Lost 6 |
| » Starters: Elmer Jacobs vs Frank Allen | Sixth | 25½ out |
| Wednesday, September 27 |
| » Lost to Braves (84-58), 1-0 | Braves Field (2-8) | 65-86 | Lost 7 |
| » Starters: Wilbur Cooper vs Lefty Tyler | Sixth | 26½ out |
| Saturday, September 30 |
| » Lost to Reds (58-93), 5-4 | Forbes Field (37-39) | 65-87 | Lost 8 |
| » Starters: Clarence Mitchell vs Al Mamaux | Sixth | 27 out |
| » Lost to Reds (59-93), 5-3 | Forbes Field (37-40) | 65-88 | Lost 9 |
| » Starters: Elmer Knetzer vs Burleigh Grimes | Sixth | 27 out |
| Sunday, October 1 |
| » Lost to Reds (60-93), 4-0 | Crosley Field (4-7) | 65-89 | Lost 10 |
| » Starters: Wilbur Cooper vs Fred Toney | Sixth | 27½ out |
| Thursday, October 5 |
| » Major-league debuts: Jose Rodriguez and Heinie Stafford (Giants) |
| Sunday, November 26 |
| Future Pirate Bob Elliott is born in San Francisco, CA. |
| Tuesday, November 28 |
| Future Pirate Max West is born in Dexter, MO. |
| Friday, December 29 |
| Former Pirate Ed Doheny dies in Medfield, MA at the age of 44. |
Game information provided by Retrosheet (www.retrosheet.org) |