Buck O'Brien had a 4-11 record with an ERA of 3.73 and 58 strikeouts in 21 appearances in his last season.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | B. O'Brien | 1913 | TOT | 21 | 4 | 11 | .267 | 15 | 3.73 | 58 | 6 | 0 | 0 | 108.2 | 124 | 45 | 56 | 0 | 48 | 0 | 4 | 448 | 1 | 4.80 | 3.98 | 1.21 | 0.00 | 12.9 | 10.7 | 1.58 | .363 | 4.64 | 130 | 2.81 | 96 | 10.27 | 1.2 |
| NAME | DATE | SEASON | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | | B. O'Brien | 8/6/1913 | 1913 | @ | 0 | 40.50 | 0 | 0 | 0 | 0 | 0.2 | 1 | 3 | 3 | 0 | 1 | 0 | 0 | 4 | 0 | ||||
| 2 | | B. O'Brien | 7/29/1913 | 1913 | @ | L | 1 | 0.00 | 1 | 0 | 0 | 0 | 6.0 | 4 | 0 | 5 | 0 | 7 | 0 | 0 | 27 | 0 | |||
| 3 | | B. O'Brien | 7/26/1913 | 1913 | @ | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | ||||
| 4 | | B. O'Brien | 7/23/1913 | 1913 | vs | 0 | 3.00 | 1 | 0 | 0 | 0 | 3.0 | 2 | 1 | 1 | 0 | 1 | 0 | 1 | 10 | 0 | ||||
| 5 | | B. O'Brien | 7/16/1913 | 1913 | vs | 1 | 6.75 | 0 | 0 | 0 | 0 | 2.2 | 6 | 2 | 2 | 0 | 1 | 0 | 0 | 14 | 0 | ||||
| 6 | | B. O'Brien | 7/11/1913 | 1913 | vs | L | 1 | 5.40 | 0 | 0 | 0 | 0 | 5.0 | 8 | 3 | 4 | 0 | 3 | 0 | 0 | 23 | 0 | |||
| 7 | | B. O'Brien | 6/28/1913 | 1913 | vs | 0 | 3.86 | 2 | 0 | 0 | 0 | 2.1 | 3 | 1 | 1 | 0 | 2 | 0 | 0 | 9 | 0 | ||||
| 8 | | B. O'Brien | 6/19/1913 | 1913 | vs | 1 | 4.32 | 3 | 0 | 0 | 0 | 8.1 | 10 | 4 | 4 | 0 | 5 | 0 | 0 | 36 | 0 | ||||
| 9 | | B. O'Brien | 6/13/1913 | 1913 | vs | 1 | 6.75 | 3 | 0 | 0 | 0 | 8.0 | 9 | 6 | 6 | 0 | 7 | 0 | 0 | 36 | 1 | ||||
| 10 | | B. O'Brien | 6/4/1913 | 1913 | vs | L | 1 | 9.00 | 2 | 0 | 0 | 0 | 2.0 | 4 | 2 | 3 | 0 | 2 | 0 | 0 | 11 | 0 | |||
| 11 | | B. O'Brien | 5/31/1913 | 1913 | @ | L | 0 | 5.40 | 1 | 0 | 0 | 0 | 1.2 | 3 | 1 | 1 | 0 | 1 | 0 | 1 | 10 | 0 | |||
| 12 | | B. O'Brien | 5/29/1913 | 1913 | @ | L | 1 | 13.50 | 0 | 0 | 0 | 0 | 2.2 | 5 | 4 | 4 | 0 | 0 | 0 | 0 | 13 | 0 | |||
| 13 | | B. O'Brien | 5/22/1913 | 1913 | @ | L | 1 | 2.25 | 4 | 1 | 0 | 0 | 8.0 | 8 | 2 | 2 | 0 | 3 | 0 | 0 | 30 | 0 | |||
| 14 | | B. O'Brien | 5/17/1913 | 1913 | @ | L | 1 | 3.38 | 4 | 1 | 0 | 0 | 8.0 | 7 | 3 | 4 | 0 | 2 | 0 | 0 | 30 | 0 | |||
| 15 | | B. O'Brien | 5/13/1913 | 1913 | @ | W | 1 | 1.00 | 5 | 1 | 0 | 0 | 9.0 | 9 | 1 | 1 | 0 | 1 | 0 | 0 | 36 | 0 | |||
| 16 | | B. O'Brien | 5/9/1913 | 1913 | @ | W | 1 | 1.00 | 4 | 1 | 0 | 0 | 9.0 | 7 | 1 | 1 | 0 | 2 | 0 | 0 | 33 | 0 | |||
| 17 | | B. O'Brien | 5/5/1913 | 1913 | vs | L | 1 | 1.50 | 9 | 1 | 0 | 0 | 12.0 | 11 | 2 | 5 | 0 | 4 | 0 | 0 | 52 | 0 | |||
| 18 | | B. O'Brien | 5/1/1913 | 1913 | vs | W | 1 | 2.00 | 4 | 1 | 0 | 0 | 9.0 | 10 | 2 | 2 | 0 | 5 | 0 | 0 | 40 | 0 | |||
| 19 | | B. O'Brien | 4/25/1913 | 1913 | @ | L | 1 | 3.68 | 12 | 0 | 0 | 0 | 7.1 | 9 | 3 | 3 | 0 | 1 | 0 | 0 | 30 | 0 | |||
| 20 | | B. O'Brien | 4/19/1913 | 1913 | @ | L | 1 | 40.50 | 0 | 0 | 0 | 0 | 0.2 | 5 | 3 | 3 | 0 | 0 | 0 | 0 | 6 | 0 | |||
| 21 | | B. O'Brien | 4/17/1913 | 1913 | @ | L | 0 | 18.00 | 1 | 0 | 0 | 0 | 1.0 | 3 | 2 | 2 | 0 | 1 | 0 | 1 | 9 | 0 | |||
| Total | 15 | 3.73 | 58 | 6 | 0 | 0 | 108.2 | 124 | 45 | 56 | 0 | 48 | 0 | 4 | 448 | 1 |
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Braves - y | 94 | 68 | .580 | |
 Phillies - w | 88 | 74 | .543 | 6.0 |
80 | 82 | .494 | 14.0 | |
77 | 85 | .475 | 17.0 | |
74 | 88 | .457 | 20.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 103 | 59 | .636 | |
 Cubs - w | 89 | 73 | .549 | 14.0 |
82 | 80 | .506 | 21.0 | |
77 | 85 | .475 | 26.0 | |
75 | 87 | .463 | 28.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 100 | 62 | .617 | |
 Padres - w | 91 | 71 | .562 | 9.0 |
86 | 76 | .531 | 14.0 | |
65 | 97 | .401 | 35.0 | |
58 | 104 | .358 | 42.0 |
Marlins
Nationals
Mets
Pirates
Cardinals
Reds
Diamondbacks
Giants
Rockies| AL East | W | L | PCT | GB |
|---|---|---|---|---|
 Rays - y | 98 | 64 | .605 | |
 Yankees - w | 93 | 68 | .578 | 4.5 |
 Red Sox - w | 87 | 75 | .537 | 11.0 |
79 | 82 | .491 | 18.5 | |
79 | 83 | .488 | 19.0 | |
| AL Central | W | L | PCT | GB |
 Guardians - y | 85 | 77 | .525 | |
 White Sox - w | 84 | 78 | .519 | 1.0 |
77 | 85 | .475 | 8.0 | |
76 | 86 | .469 | 9.0 | |
69 | 93 | .426 | 16.0 | |
| AL West | W | L | PCT | GB |
 Astros - y | 81 | 81 | .500 | |
80 | 82 | .494 | 1.0 | |
76 | 86 | .469 | 5.0 | |
64 | 98 | .395 | 17.0 | |
62 | 100 | .383 | 19.0 |
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Blue Jays
Twins
Royals
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