| Monday, January 24 |
| Future Pirate Johnny Dickshot is born in Waukegan, IL. |
| Thursday, March 3 |
| Future Pirate Bill Brenzel is born in Oakland, CA. |
| Friday, March 18 |
| Former Pirate Alan Storke dies in Newton, MA at the age of 26. |
| Thursday, April 14 |
| » Defeated Cardinals (0-1), 5-1 | Robison Field (1-0) | 1-0 | |
| » Starters: Howie Camnitz vs Vic Willis | First | -- |
| Friday, April 15 |
| » Lost to Cardinals (1-1), 6-5 | Robison Field (1-1) | 1-1 | |
| » Starters: Lefty Leifield vs Frank Corridon | Second | 1 out |
| Saturday, April 16 |
| » Major-league debuts: Bert Humphries (Phillies) |
| Sunday, April 17 |
| » Defeated Cardinals (1-2), 4-2 | Robison Field (2-1) | 2-1 | |
| » Starters: Sam Leever vs Bob Harmon | First | -- |
| Thursday, April 21 |
| » Defeated Cardinals (1-4), 9-4 | Forbes Field (1-0) | 3-1 | Won 2 |
| » Starters: Vic Willis vs Babe Adams | Second | ½ out |
| Friday, April 22 |
| » Defeated Cardinals (1-5), 4-0 | Forbes Field (2-0) | 4-1 | Won 3 |
| » Starters: Frank Corridon vs Bill Powell | Second | ½ out |
| Saturday, April 23 |
| » Defeated Cardinals (1-6), 7-4 | Forbes Field (3-0) | 5-1 | Won 4 |
| » Starters: Bob Harmon vs Howie Camnitz | Second | ½ out |
| Sunday, April 24 |
| » Major-league debuts: Rube Geyer (Cardinals) |
| Monday, April 25 |
| Future Pirate Jimmy Brown is born in Jamesville, NC. |
| Tuesday, April 26 |
| » Major-league debuts: Walt Dickson (Giants) |
| Wednesday, April 27 |
| » Lost to Cubs (5-2), 1-0 | West Side Grounds (0-1) | 5-2 | |
| » Starters: Lefty Leifield vs Harry McIntire | Second | 1 out |
| Thursday, April 28 |
| » Defeated Reds (3-5), 5-2 | Forbes Field (4-0) | 6-2 | |
| » Starters: Fred Beebe vs Babe Adams | First | -- |
| Saturday, April 30 |
| » Defeated Cubs (6-4), 1-0 | Forbes Field (5-0) | 7-2 | Won 2 |
| » Starters: Mordecai Brown vs Bill Powell | First | -- |
| Sunday, May 1 |
| » Lost to Cubs (7-4), 2-1 | West Side Grounds (0-2) | 7-3 | |
| » Starters: Howie Camnitz vs Orval Overall | Second | 1 out |
| Monday, May 2 |
| » Defeated Cubs (7-5), 5-2 | Forbes Field (6-0) | 8-3 | |
| » Starters: Harry McIntire vs Babe Adams | Second | 1 out |
| Wednesday, May 4 |
| » Defeated Cubs (7-6), 8-3 | Forbes Field (7-0) | 9-3 | Won 2 |
| » Starters: Mordecai Brown vs Kirby White | First | -- |
| » Major-league debuts: Roy Miller (Cubs) |
| Thursday, May 5 |
| » Lost to Cubs (8-6), 2-0 | Forbes Field (7-1) | 9-4 | |
| » Starters: Orval Overall vs Bill Powell | First | -- |
| Friday, May 6 |
| » Defeated Cubs (8-7), 6-1 | West Side Grounds (1-2) | 10-4 | |
| » Starters: Lefty Leifield vs Harry McIntire | First | -- |
| Sunday, May 8 |
| » Defeated Cubs (8-8), 7-4 | West Side Grounds (2-2) | 11-4 | Won 2 |
| » Starters: Howie Camnitz vs King Cole | First | -- |
| Monday, May 9 |
| » Defeated Dodgers (6-14), 7-6 | Forbes Field (8-1) | 12-4 | Won 3 |
| » Starters: Doc Scanlan vs Lefty Leifield | First | -- |
| Tuesday, May 10 |
| » Lost to Dodgers (7-14), 1-0 | Forbes Field (8-2) | 12-5 | |
| » Starters: George Bell vs Sam Leever | First | -- |
| Thursday, May 12 |
| » Lost to Dodgers (8-14), 11-9 | Forbes Field (8-3) | 12-6 | Lost 2 |
| » Starters: Nap Rucker vs Howie Camnitz | First | -- |
| Friday, May 13 |
| » Lost to Phillies (11-8), 4-0 | Forbes Field (8-4) | 12-7 | Lost 3 |
| » Starters: Bob Ewing vs Bill Powell | First | -- |
| Saturday, May 14 |
| » Lost to Phillies (12-8), 6-2 | Forbes Field (8-5) | 12-8 | Lost 4 |
| » Starters: Lew Moren vs Babe Adams | First | -- |
| Monday, May 16 |
| » Defeated Phillies (12-9), 7-4 | Forbes Field (9-5) | 13-8 | |
| » Starters: Lou Schettler vs Sam Leever | First | -- |
| Tuesday, May 17 |
| » Defeated Braves (9-15), 3-0 | Forbes Field (10-5) | 14-8 | Won 2 |
| » Starters: Sam Frock vs Deacon Phillippe | First | -- |
| Wednesday, May 18 |
| » Defeated Braves (9-16), 8-5 | Forbes Field (11-5) | 15-8 | Won 3 |
| » Starters: Cliff Curtis vs Howie Camnitz | First | -- |
| Thursday, May 19 |
| » Lost to Braves (10-16), 6-3 | Forbes Field (11-6) | 15-9 | |
| » Starters: Cliff Curtis vs Bill Powell | First | -- |
| Saturday, May 21 |
| » Defeated Giants (16-14), 1-0 | Forbes Field (12-6) | 16-9 | |
| » Starters: Bugs Raymond vs Lefty Leifield | First | -- |
| Monday, May 23 |
| » Lost to Giants (17-14), 7-1 | Forbes Field (12-7) | 16-10 | |
| » Starters: Hooks Wiltse vs Deacon Phillippe | First | -- |
| Wednesday, May 25 |
| » Lost to Giants (18-14), 4-3 | Forbes Field (12-8) | 16-11 | Lost 2 |
| » Starters: Red Ames vs Gene Moore | Second | 1 out |
| Thursday, May 26 |
| » Lost to Braves (13-19), 4-1 | Forbes Field (12-9) | 16-12 | Lost 3 |
| » Starters: Buster Brown vs Babe Adams | Second | 2 out |
| Friday, May 27 |
| » Lost to Braves (14-19), 6-1 | Forbes Field (12-10) | 16-13 | Lost 4 |
| » Starters: Cliff Curtis vs Bill Powell | Fourth | 2½ out |
| Saturday, May 28 |
| » Lost to Cubs (20-11), 9-0 | West Side Grounds (2-3) | 16-14 | Lost 5 |
| » Starters: Lefty Leifield vs Lew Richie | Fourth | 3½ out |
| Sunday, May 29 |
| » Lost to Cubs (21-11), 2-1 | West Side Grounds (2-4) | 16-15 | Lost 6 |
| » Starters: Howie Camnitz vs King Cole | Fourth | 4½ out |
| Monday, May 30 |
| » Defeated Reds (18-15), 13-7 | Forbes Field (13-10) | 17-15 | |
| » Starters: Bob Spade vs Babe Adams | Third | 3½ out |
| » Defeated Reds (18-16), 7-4 | Forbes Field (14-10) | 18-15 | Won 2 |
| » Starters: Fred Beebe vs Nick Maddox | Third | 3½ out |
| Wednesday, June 1 |
| » Lost to Dodgers (17-22), 2-1 | Washington Park III (0-1) | 18-16 | |
| » Starters: Lefty Leifield vs Cy Barger | Third | 4½ out |
| Thursday, June 2 |
| » Lost to Dodgers (18-22), 3-1 | Washington Park III (0-2) | 18-17 | Lost 2 |
| » Starters: Howie Camnitz vs Nap Rucker | Third | 5½ out |
| Saturday, June 4 |
| » Lost to Dodgers (19-22), 9-4 | Washington Park III (0-3) | 18-18 | Lost 3 |
| » Starters: Babe Adams vs Elmer Knetzer | Fourth | 6 out |
| Tuesday, June 7 |
| » Defeated Braves (15-27), 3-1 | South End Grounds III (1-0) | 19-18 | |
| » Starters: Lefty Leifield vs Buster Brown | Third | 4½ out |
| Wednesday, June 8 |
| » Lost to Braves (16-27), 4-0 | South End Grounds III (1-1) | 19-19 | |
| » Starters: Howie Camnitz vs Cliff Curtis | Fourth | 5 out |
| » Defeated Braves (16-28), 3-2 | South End Grounds III (2-1) | 20-19 | |
| » Starters: Babe Adams vs Al Mattern | Fourth | 5 out |
| Thursday, June 9 |
| » Defeated Braves (16-29), 7-6 | South End Grounds III (3-1) | 21-19 | Won 2 |
| » Starters: Nick Maddox vs Sam Frock | Fourth | 5 out |
| Saturday, June 11 |
| » Lost to Phillies (17-24), 5-0 | Baker Bowl (0-1) | 21-20 | |
| » Starters: Lefty Leifield vs George McQuillan | Fourth | 6 out |
| Monday, June 13 |
| » Defeated Phillies (17-25), 6-3 | Baker Bowl (1-1) | 22-20 | |
| » Starters: Kirby White vs Bob Ewing | Fourth | 6 out |
| Tuesday, June 14 |
| » Lost to Phillies (18-25), 9-4 | Baker Bowl (1-2) | 22-21 | |
| » Starters: Nick Maddox vs Eddie Stack | Fourth | 7 out |
| Wednesday, June 15 |
| » Lost to Giants (29-19), 5-1 | Polo Grounds IV (0-1) | 22-22 | Lost 2 |
| » Starters: Lefty Leifield vs Christy Mathewson | Fourth | 7 out |
| Friday, June 17 |
| » Defeated Giants (29-20), 6-3 | Polo Grounds IV (1-1) | 23-22 | |
| » Starters: Babe Adams vs Louis Drucke | Fourth | 7 out |
| Future Pirate Joe Bowman is born in Kansas City, KS. |
| Sunday, June 19 |
| » Major-league debuts: Joe Burns (Reds) |
| Monday, June 20 |
| » Defeated Cardinals (24-27), 5-3 | Robison Field (3-1) | 24-22 | Won 2 |
| » Starters: Kirby White vs Johnny Lush | Third | 7½ out |
| Tuesday, June 21 |
| » Lost to Cardinals (25-27), 6-5 | Robison Field (3-2) | 24-23 | |
| » Starters: Kirby White vs Vic Willis | Third | 8 out |
| » Defeated Cardinals (25-28), 10-3 | Robison Field (4-2) | 25-23 | |
| » Starters: Bill Powell vs Slim Sallee | Third | 8 out |
| Wednesday, June 22 |
| » Defeated Cardinals (25-29), 6-1 | Robison Field (5-2) | 26-23 | Won 2 |
| » Starters: Lefty Webb vs Frank Corridon | Third | 8 out |
| Thursday, June 23 |
| » Lost to Cubs (36-16), 9-0 | West Side Grounds (2-5) | 26-24 | |
| » Starters: Lefty Leifield vs Mordecai Brown | Third | 9 out |
| Friday, June 24 |
| » Defeated Cubs (36-17), 6-5 | Forbes Field (15-10) | 27-24 | |
| » Starters: Lew Richie vs Howie Camnitz | Third | 8 out |
| Saturday, June 25 |
| » Defeated Cubs (36-18), 8-2 | Forbes Field (16-10) | 28-24 | Won 2 |
| » Starters: Ed Reulbach vs Sam Leever | Third | 7 out |
| Sunday, June 26 |
| » Lost to Reds (28-28), 6-3 | Palace of the Fans (0-1) | 28-25 | |
| » Starters: Kirby White vs George Suggs | Third | 8 out |
| Monday, June 27 |
| » Defeated Cardinals (27-33), 7-3 | Forbes Field (17-10) | 29-25 | |
| » Starters: Johnny Lush vs Lefty Webb | Third | 7 out |
| Tuesday, June 28 |
| » Defeated Cardinals (27-34), 6-4 | Forbes Field (18-10) | 30-25 | Won 2 |
| » Starters: Les Backman vs Lefty Leifield | Third | 7 out |
| Wednesday, June 29 |
| » Lost to Reds (30-29), 6-2 | Forbes Field (18-11) | 30-26 | |
| » Starters: Harry Gaspar vs Sam Leever | Third | 7 out |
| Future Pirate Burgess Whitehead is born in Tarboro, NC. |
| Thursday, June 30 |
| » Defeated Reds (30-30), 8-3 | Forbes Field (19-11) | 31-26 | |
| » Starters: Jack Rowan vs Babe Adams | Third | 6 out |
| Friday, July 1 |
| » Lost to Reds (31-30), 4-1 | Forbes Field (19-12) | 31-27 | |
| » Starters: George Suggs vs Howie Camnitz | Third | 7 out |
| Saturday, July 2 |
| » Lost to Reds (32-30), 5-1 | Forbes Field (19-13) | 31-28 | Lost 2 |
| » Starters: Bill Burns vs Bill Powell | Third | 7½ out |
| Sunday, July 3 |
| » Defeated Reds (32-31), 10-2 | Palace of the Fans (1-1) | 32-28 | |
| » Starters: Howie Camnitz vs Harry Gaspar | Third | 7½ out |
| Monday, July 4 |
| » Defeated Cubs (40-22), 5-2 | Forbes Field (20-13) | 33-28 | Won 2 |
| » Starters: Harry McIntire vs Nick Maddox | Third | 7½ out |
| » Lost to Cubs (41-22), 7-2 | Forbes Field (20-14) | 33-29 | |
| » Starters: Ed Reulbach vs Babe Adams | Third | 7½ out |
| Tuesday, July 5 |
| » Lost to Cubs (42-22), 11-3 | Forbes Field (20-15) | 33-30 | Lost 2 |
| » Starters: Mordecai Brown vs Bill Powell | Third | 8½ out |
| Wednesday, July 6 |
| » Defeated Cubs (42-23), 3-2 | Forbes Field (21-15) | 34-30 | |
| » Starters: Lew Richie vs Howie Camnitz | Third | 7½ out |
| Thursday, July 7 |
| Future Pirate Red Nonnenkamp is born in St. Louis, MO. |
| Friday, July 8 |
| » Lost to Dodgers (30-37), 6-5 | Forbes Field (21-16) | 34-31 | |
| » Starters: Fred Miller vs Lefty Webb | Third | 8 out |
| Saturday, July 9 |
| » Defeated Phillies (32-36), 7-1 | Forbes Field (22-16) | 35-31 | |
| » Starters: Bob Ewing vs Howie Camnitz | Third | 7 out |
| Monday, July 11 |
| » Lost to Phillies (33-36), 18-0 | Forbes Field (22-17) | 35-32 | |
| » Starters: George McQuillan vs Lefty Leifield | Third | 7½ out |
| Wednesday, July 13 |
| » Defeated Giants (42-28), 4-0 | Forbes Field (23-17) | 36-32 | |
| » Starters: Louis Drucke vs Howie Camnitz | Third | 6½ out |
| Thursday, July 14 |
| » Defeated Giants (42-29), 4-3 | Forbes Field (24-17) | 37-32 | Won 2 |
| » Starters: Christy Mathewson vs Lefty Leifield | Third | 6 out |
| Friday, July 15 |
| » Defeated Giants (42-30), 8-7 | Forbes Field (25-17) | 38-32 | Won 3 |
| » Starters: Hooks Wiltse vs Nick Maddox | Third | 5½ out |
| Saturday, July 16 |
| » Defeated Giants (42-31), 6-3 | Forbes Field (26-17) | 39-32 | Won 4 |
| » Starters: Doc Crandall vs Babe Adams | Third | 5½ out |
| Monday, July 18 |
| » Lost to Braves (31-49), 4-2 | Forbes Field (26-18) | 39-33 | |
| » Starters: Al Mattern vs Howie Camnitz | Third | 7 out |
| » Defeated Braves (31-50), 4-0 | Forbes Field (27-18) | 40-33 | |
| » Starters: Buster Brown vs Kirby White | Third | 7 out |
| Tuesday, July 19 |
| » Defeated Braves (31-51), 5-4 | Forbes Field (28-18) | 41-33 | Won 2 |
| » Starters: Sam Frock vs Sam Leever | Third | 6 out |
| Wednesday, July 20 |
| » Lost to Braves (32-51), 3-2 | Forbes Field (28-19) | 41-34 | |
| » Starters: George Ferguson vs Nick Maddox | Third | 7 out |
| Thursday, July 21 |
| » Defeated Dodgers (34-47), 5-1 | Forbes Field (29-19) | 42-34 | |
| » Starters: Nap Rucker vs Howie Camnitz | Third | 6½ out |
| » Defeated Dodgers (34-48), 7-0 | Forbes Field (30-19) | 43-34 | Won 2 |
| » Starters: Kaiser Wilhelm vs Kirby White | Third | 6½ out |
| Friday, July 22 |
| » Defeated Dodgers (34-49), 14-1 | Forbes Field (31-19) | 44-34 | Won 3 |
| » Starters: Fred Miller vs Deacon Phillippe | Second | 6 out |
| Saturday, July 23 |
| » Defeated Dodgers (34-50), 7-2 | Forbes Field (32-19) | 45-34 | Won 4 |
| » Starters: Doc Scanlan vs Nick Maddox | Second | 6 out |
| Monday, July 25 |
| » Lost to Phillies (40-42), 3-2 | Forbes Field (32-20) | 45-35 | |
| » Starters: Earl Moore vs Howie Camnitz | Third | 7½ out |
| Tuesday, July 26 |
| » Defeated Phillies (40-43), 5-2 | Forbes Field (33-20) | 46-35 | |
| » Starters: Lew Moren vs Kirby White | Third | 7 out |
| Wednesday, July 27 |
| » Defeated Reds (44-42), 8-4 | Palace of the Fans (2-1) | 47-35 | Won 2 |
| » Starters: Deacon Phillippe vs Harry Gaspar | Third | 6 out |
| Thursday, July 28 |
| » Defeated Reds (44-43), 4-2 | Palace of the Fans (3-1) | 48-35 | Won 3 |
| » Starters: Babe Adams vs George Suggs | Second | 6 out |
| Friday, July 29 |
| » Defeated Reds (44-44), 7-3 | Forbes Field (34-20) | 49-35 | Won 4 |
| » Starters: Bill Burns vs Kirby White | Second | 6 out |
| Saturday, July 30 |
| » Lost to Reds (45-44), 4-2 | Forbes Field (34-21) | 49-36 | |
| » Starters: Fred Beebe vs Sam Leever | Third | 7 out |
| Sunday, July 31 |
| » Defeated Reds (45-45), 3-2 | Palace of the Fans (4-1) | 50-36 | |
| » Starters: Howie Camnitz vs Harry Gaspar | Third | 7½ out |
| Tuesday, August 2 |
| » Lost to Phillies (45-44), 6-1 | Baker Bowl (1-3) | 50-37 | |
| » Starters: Kirby White vs Earl Moore | Third | 8½ out |
| Wednesday, August 3 |
| » Defeated Phillies (45-45), 4-1 | Baker Bowl (2-3) | 51-37 | |
| » Starters: Lefty Leifield vs Lew Moren | Second | 8 out |
| » Defeated Phillies (45-46), 5-4 | Baker Bowl (3-3) | 52-37 | Won 2 |
| » Starters: Deacon Phillippe vs Bob Ewing | Second | 8 out |
| Thursday, August 4 |
| » Defeated Phillies (45-47), 6-0 | Baker Bowl (4-3) | 53-37 | Won 3 |
| » Starters: Babe Adams vs Eddie Stack | Second | 8 out |
| Friday, August 5 |
| » Lost to Phillies (46-47), 7-1 | Baker Bowl (4-4) | 53-38 | |
| » Starters: Howie Camnitz vs Earl Moore | Second | 8 out |
| Saturday, August 6 |
| » Defeated Braves (36-63), 10-2 | South End Grounds III (4-1) | 54-38 | |
| » Starters: Kirby White vs Cliff Curtis | Second | 7 out |
| Monday, August 8 |
| » Defeated Braves (36-64), 6-0 | South End Grounds III (5-1) | 55-38 | Won 2 |
| » Starters: Lefty Leifield vs Buster Brown | Second | 6½ out |
| Tuesday, August 9 |
| » Defeated Braves (36-65), 10-0 | South End Grounds III (6-1) | 56-38 | Won 3 |
| » Starters: Babe Adams vs Al Mattern | Second | 6 out |
| Wednesday, August 10 |
| » Defeated Braves (36-66), 3-2 | South End Grounds III (7-1) | 57-38 | Won 4 |
| » Starters: Howie Camnitz vs Cliff Curtis | Second | 5½ out |
| Thursday, August 11 |
| » Defeated Dodgers (41-57), 3-0 | Washington Park III (1-3) | 58-38 | Won 5 |
| » Starters: Kirby White vs Cy Barger | Second | 5 out |
| Friday, August 12 |
| » Defeated Dodgers (41-58), 3-2 | Washington Park III (2-3) | 59-38 | Won 6 |
| » Starters: Lefty Leifield vs George Bell | Second | 5 out |
| Saturday, August 13 |
| » Defeated Dodgers (41-59), 3-2 | Washington Park III (3-3) | 60-38 | Won 7 |
| » Starters: Babe Adams vs Doc Scanlan | Second | 5½ out |
| » Tied Dodgers, 8-8 | Washington Park III (3-3) | 60-38 | |
| » Starters: Howie Camnitz vs Nap Rucker | Second | 5½ out |
| Monday, August 15 |
| » Defeated Giants (58-41), 2-1 | Polo Grounds IV (2-1) | 61-38 | Won 8 |
| » Starters: Lefty Leifield vs Christy Mathewson | Second | 5½ out |
| » Lost to Giants (59-41), 2-1 | Polo Grounds IV (2-2) | 61-39 | |
| » Starters: Howie Camnitz vs Hooks Wiltse | Second | 5½ out |
| Tuesday, August 16 |
| » Lost to Giants (60-41), 2-1 | Polo Grounds IV (2-3) | 61-40 | Lost 2 |
| » Starters: Babe Adams vs Red Ames | Second | 6 out |
| Wednesday, August 17 |
| » Defeated Giants (60-42), 2-1 | Polo Grounds IV (3-3) | 62-40 | |
| » Starters: Kirby White vs Louis Drucke | Second | 5½ out |
| Thursday, August 18 |
| » Defeated Reds (52-55), 10-2 | Forbes Field (35-21) | 63-40 | Won 2 |
| » Starters: Harry Gaspar vs Howie Camnitz | Second | 5 out |
| Friday, August 19 |
| » Defeated Braves (40-71), 8-6 | Forbes Field (36-21) | 64-40 | Won 3 |
| » Starters: Cliff Curtis vs Lefty Leifield | Second | 5 out |
| Saturday, August 20 |
| » Lost to Braves (41-71), 3-2 | Forbes Field (36-22) | 64-41 | |
| » Starters: Buster Brown vs Babe Adams | Second | 6 out |
| Monday, August 22 |
| » Defeated Phillies (54-54), 6-5 | Forbes Field (37-22) | 65-41 | |
| » Starters: Lou Schettler vs Kirby White | Second | 6½ out |
| » Defeated Phillies (54-55), 8-4 | Forbes Field (38-22) | 66-41 | Won 2 |
| » Starters: Eddie Stack vs Howie Camnitz | Second | 6½ out |
| Tuesday, August 23 |
| » Lost to Phillies (55-55), 6-2 | Forbes Field (38-23) | 66-42 | |
| » Starters: Earl Moore vs Lefty Leifield | Second | 7½ out |
| Wednesday, August 24 |
| » Lost to Phillies (56-55), 10-5 | Forbes Field (38-24) | 66-43 | Lost 2 |
| » Starters: Bob Ewing vs Babe Adams | Second | 8½ out |
| Thursday, August 25 |
| » Defeated Dodgers (44-68), 4-3 | Forbes Field (39-24) | 67-43 | |
| » Starters: George Bell vs Lefty Leifield | Second | 8½ out |
| Friday, August 26 |
| » Defeated Dodgers (44-69), 4-2 | Forbes Field (40-24) | 68-43 | Won 2 |
| » Starters: Elmer Knetzer vs Babe Adams | Second | 8½ out |
| Saturday, August 27 |
| » Defeated Dodgers (44-70), 7-5 | Forbes Field (41-24) | 69-43 | Won 3 |
| » Starters: Nap Rucker vs Deacon Phillippe | Second | 7½ out |
| Monday, August 29 |
| » Lost to Giants (65-48), 2-1 | Forbes Field (41-25) | 69-44 | |
| » Starters: Louis Drucke vs Lefty Leifield | Second | 9 out |
| » Lost to Giants (66-48), 8-3 | Forbes Field (41-26) | 69-45 | Lost 2 |
| » Starters: Hooks Wiltse vs Kirby White | Second | 9 out |
| Tuesday, August 30 |
| » Lost to Giants (67-48), 5-2 | Forbes Field (41-27) | 69-46 | Lost 3 |
| » Starters: Christy Mathewson vs Babe Adams | Second | 10 out |
| Thursday, September 1 |
| » Lost to Reds (61-59), 4-1 | Palace of the Fans (4-2) | 69-47 | Lost 4 |
| » Starters: Howie Camnitz vs Fred Beebe | Second | 10½ out |
| Friday, September 2 |
| » Lost to Reds (62-59), 3-2 | Palace of the Fans (4-3) | 69-48 | Lost 5 |
| » Starters: Kirby White vs Jack Rowan | Second | 11 out |
| Saturday, September 3 |
| » Defeated Reds (62-60), 2-0 | Palace of the Fans (5-3) | 70-48 | |
| » Starters: Babe Adams vs Bill Burns | Second | 10½ out |
| Sunday, September 4 |
| » Lost to Reds (63-60), 6-0 | Palace of the Fans (5-4) | 70-49 | |
| » Starters: Howie Camnitz vs George Suggs | Second | 10½ out |
| » Defeated Reds (63-61), 7-3 | Palace of the Fans (6-4) | 71-49 | |
| » Starters: Deacon Phillippe vs Fred Beebe | Second | 10½ out |
| Monday, September 5 |
| » Defeated Cardinals (48-72), 9-8 | Forbes Field (42-27) | 72-49 | Won 2 |
| » Starters: Bob Harmon vs Lefty Leifield | Second | 9½ out |
| » Defeated Cardinals (48-73), 11-4 | Forbes Field (43-27) | 73-49 | Won 3 |
| » Starters: Ed Zmich vs Kirby White | Second | 9½ out |
| Tuesday, September 6 |
| Future Pirate Johnny Lanning is born in Asheville, NC. |
| Wednesday, September 7 |
| » Defeated Cardinals (48-74), 11-6 | Forbes Field (44-27) | 74-49 | Won 4 |
| » Starters: Johnny Lush vs Babe Adams | Second | 9½ out |
| » Defeated Cardinals (48-75), 11-3 | Forbes Field (45-27) | 75-49 | Won 5 |
| » Starters: Frank Corridon vs Sam Leever | Second | 9½ out |
| Thursday, September 8 |
| » Lost to Cardinals (49-75), 4-2 | Forbes Field (45-28) | 75-50 | |
| » Starters: Bob Harmon vs Jack Ferry | Second | 10½ out |
| » Major-league debuts: Red Corriden (Cardinals) |
| Saturday, September 10 |
| » Defeated Cubs (84-39), 5-4 | West Side Grounds (3-5) | 76-50 | |
| » Starters: Lefty Leifield vs Mordecai Brown | Second | 9½ out |
| Sunday, September 11 |
| » Lost to Cubs (85-39), 5-2 | West Side Grounds (3-6) | 76-51 | |
| » Starters: Howie Camnitz vs King Cole | Second | 10½ out |
| Monday, September 12 |
| » Lost to Reds (65-67), 4-0 | Forbes Field (45-29) | 76-52 | Lost 2 |
| » Starters: Fred Beebe vs Kirby White | Second | 11 out |
| Tuesday, September 13 |
| » Defeated Giants (72-54), 11-1 | Polo Grounds IV (4-3) | 77-52 | |
| » Starters: Babe Adams vs Christy Mathewson | Second | 11 out |
| » Lost to Giants (73-54), 15-3 | Polo Grounds IV (4-4) | 77-53 | |
| » Starters: Lefty Leifield vs Hooks Wiltse | Second | 11 out |
| » Major-league debuts: Hank Gowdy (Giants) |
| Wednesday, September 14 |
| » Lost to Giants (74-54), 3-2 | Polo Grounds IV (4-5) | 77-54 | Lost 2 |
| » Starters: Howie Camnitz vs Louis Drucke | Second | 11½ out |
| Thursday, September 15 |
| » Lost to Giants (75-54), 11-3 | Polo Grounds IV (4-6) | 77-55 | Lost 3 |
| » Starters: Kirby White vs Doc Crandall | Second | 12 out |
| » Defeated Giants (75-55), 6-1 | Polo Grounds IV (5-6) | 78-55 | |
| » Starters: Babe Adams vs Rube Marquard | Second | 12 out |
| Friday, September 16 |
| » Lost to Giants (76-55), 3-1 | Polo Grounds IV (5-7) | 78-56 | |
| » Starters: Lefty Leifield vs Christy Mathewson | Second | 13 out |
| Saturday, September 17 |
| » Lost to Braves (47-88), 5-4 | South End Grounds III (7-2) | 78-57 | Lost 2 |
| » Starters: Howie Camnitz vs George Ferguson | Third | 13½ out |
| Tuesday, September 20 |
| » Defeated Braves (47-89), 9-2 | South End Grounds III (8-2) | 79-57 | |
| » Starters: Babe Adams vs Cliff Curtis | Third | 13½ out |
| » Defeated Braves (47-90), 7-4 | South End Grounds III (9-2) | 80-57 | Won 2 |
| » Starters: Lefty Leifield vs Al Mattern | Third | 13½ out |
| » Major-league debuts: Lefty Tyler (Braves) |
| Wednesday, September 21 |
| Future Pirate Max Butcher is born in Holden, WV. |
| Thursday, September 22 |
| » Defeated Phillies (71-68), 6-5 | Baker Bowl (5-4) | 81-57 | Won 3 |
| » Starters: Deacon Phillippe vs Bob Ewing | Second | 12½ out |
| Friday, September 23 |
| » Lost to Phillies (72-68), 2-1 | Baker Bowl (5-5) | 81-58 | |
| » Starters: Jack Ferry vs Lew Moren | Second | 12½ out |
| Saturday, September 24 |
| » Defeated Phillies (72-69), 6-1 | Baker Bowl (6-5) | 82-58 | |
| » Starters: Babe Adams vs Earl Moore | Second | 11½ out |
| Future Pirate Dixie Walker is born in Villa Rica, GA. |
| Monday, September 26 |
| » Lost to Dodgers (57-85), 4-1 | Washington Park III (3-4) | 82-59 | |
| » Starters: Lefty Leifield vs Doc Scanlan | Third | 12 out |
| » Lost to Dodgers (58-85), 4-1 | Washington Park III (3-5) | 82-60 | Lost 2 |
| » Starters: Kirby White vs Nap Rucker | Third | 12 out |
| Future Pirate Joe Sullivan is born in Mason City, IL. |
| Tuesday, September 27 |
| » Lost to Dodgers (59-85), 4-3 | Washington Park III (3-6) | 82-61 | Lost 3 |
| » Starters: Howie Camnitz vs Elmer Knetzer | Third | 12½ out |
| Wednesday, September 28 |
| » Lost to Dodgers (60-85), 2-0 | Washington Park III (3-7) | 82-62 | Lost 4 |
| » Starters: Elmer Steele vs George Bell | Third | 13 out |
| Thursday, September 29 |
| » Defeated Dodgers (60-86), 7-2 | Washington Park III (4-7) | 83-62 | |
| » Starters: Babe Adams vs Sandy Burk | Third | 13 out |
| Saturday, October 1 |
| » Defeated Cardinals (59-84), 3-2 | Forbes Field (46-29) | 84-62 | Won 2 |
| » Starters: Cy Alberts vs Jack Ferry | Third | 13 out |
| Sunday, October 2 |
| » Defeated Cardinals (59-85), 5-0 | Robison Field (6-2) | 85-62 | Won 3 |
| » Starters: Lefty Leifield vs Bill Steele | Third | 13 out |
| Monday, October 3 |
| » Defeated Cardinals (59-86), 5-2 | Robison Field (7-2) | 86-62 | Won 4 |
| » Starters: Babe Adams vs Bunny Hearn | Third | 12 out |
| » Major-league debuts: Max Carey (Pirates) |
| Tuesday, October 4 |
| » Lost to Cardinals (60-86), 2-1 | Robison Field (7-3) | 86-63 | |
| » Starters: Elmer Steele vs Roy Golden | Third | 13 out |
| Thursday, October 6 |
| » Lost to Cubs (98-48), 4-0 | West Side Grounds (3-7) | 86-64 | Lost 2 |
| » Starters: Babe Adams vs Lew Richie | Third | 14 out |
| Friday, October 7 |
| » Lost to Cubs (99-48), 1-0 | West Side Grounds (3-8) | 86-65 | Lost 3 |
| » Starters: Lefty Leifield vs Mordecai Brown | Third | 15 out |
| » Major-league debuts: Alex McCarthy (Pirates) |
| Saturday, October 8 |
| » Lost to Cubs (100-48), 5-3 | Forbes Field (46-30) | 86-66 | Lost 4 |
| » Starters: Harry McIntire vs Elmer Steele | Third | 16 out |
| Sunday, October 9 |
| » Lost to Reds (75-79), 7-1 | Palace of the Fans (6-5) | 86-67 | Lost 5 |
| » Starters: Kirby White vs Fred Beebe | Third | 17 out |
| Sunday, October 23 |
| Future Pirate Billy Sullivan is born in Chicago, IL. |
| Monday, November 7 |
| Future Pirate Bill Brubaker is born in Cleveland, OH. |
Game information provided by Retrosheet (www.retrosheet.org) |
