35 pitchers are tied for the highest win percentage for the Red Sox when pitching in 20+ games, at 1.000. The first three are Aroldis Chapman, Justin Slaten and Chris Martin.
| NAME | W% | G | MONTH | W | L | 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 | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | A. Chapman | 1.000 | 21 | July | 2 | 0 | 0 | 0.90 | 29 | 0 | 0 | 15 | 20.0 | 13 | 2 | 2 | 2 | 8 | 0 | 15 | 0 | 80 | 1 | 13.05 | 3.60 | 3.63 | 0.90 | 36.3 | 10.0 | 1.05 | .268 | 0.90 | 5.85 |
| 2 |  | J. Slaten | 1.000 | 21 | September | 2 | 0 | 0 | 3.66 | 17 | 0 | 0 | 1 | 19.2 | 22 | 8 | 9 | 3 | 2 | 0 | 2 | 0 | 84 | 1 | 7.78 | 0.92 | 8.50 | 1.37 | 20.2 | 2.4 | 1.22 | .306 | 4.12 | 10.07 |
| 3 | | C. Martin | 1.000 | 23 | August | 1 | 0 | 0 | 0.43 | 20 | 0 | 0 | 2 | 21.0 | 20 | 1 | 4 | 0 | 2 | 0 | 5 | 0 | 83 | 0 | 8.57 | 0.86 | 10.00 | 0.00 | 24.1 | 2.4 | 1.05 | .328 | 1.71 | 8.57 |
| 4 | | B. Bernardino | 1.000 | 29 | June | 2 | 0 | 0 | 4.91 | 23 | 0 | 0 | 0 | 25.2 | 33 | 14 | 14 | 0 | 15 | 0 | 2 | 4 | 119 | 2 | 8.06 | 5.26 | 1.53 | 0.00 | 19.3 | 12.6 | 1.87 | .407 | 4.91 | 11.57 |
| 5 | | G. Whitlock | 1.000 | 38 | July | 3 | 0 | 1 | 1.01 | 50 | 0 | 0 | 3 | 44.2 | 26 | 5 | 5 | 2 | 1 | 2 | 5 | 0 | 160 | 1 | 10.07 | 0.20 | 50.00 | 0.40 | 31.3 | 0.6 | 0.60 | .229 | 1.01 | 5.24 |
| 6 | | H. Sawamura | 1.000 | 20 | June | 3 | 0 | 0 | 2.21 | 19 | 0 | 0 | 0 | 20.1 | 13 | 5 | 8 | 3 | 11 | 0 | 2 | 2 | 86 | 1 | 8.41 | 4.87 | 1.73 | 1.33 | 22.1 | 12.8 | 1.18 | .189 | 3.54 | 5.75 |
| 7 | | R. Brasier | 1.000 | 36 | April | 2 | 0 | 0 | 3.86 | 29 | 0 | 0 | 7 | 32.2 | 29 | 14 | 15 | 4 | 10 | 3 | 15 | 0 | 137 | 2 | 7.99 | 2.76 | 2.90 | 1.10 | 21.2 | 7.3 | 1.19 | .275 | 4.13 | 7.99 |
| 8 | | H. Velazquez | 1.000 | 20 | September | 1 | 0 | 2 | 2.88 | 15 | 0 | 0 | 0 | 25.0 | 27 | 8 | 10 | 1 | 10 | 1 | 6 | 1 | 107 | 2 | 5.40 | 3.60 | 1.50 | 0.36 | 14.0 | 9.3 | 1.48 | .325 | 3.60 | 9.72 |
| 9 | | R. Scott | 1.000 | 20 | September | 2 | 0 | 0 | 3.65 | 15 | 0 | 0 | 0 | 12.1 | 15 | 5 | 5 | 2 | 7 | 3 | 4 | 2 | 61 | 1 | 10.95 | 5.11 | 2.14 | 1.46 | 24.6 | 11.5 | 1.78 | .382 | 3.65 | 10.95 |
| 10 |  | C. Kimbrel | 1.000 | 32 | August | 6 | 0 | 0 | 2.51 | 61 | 0 | 0 | 17 | 32.1 | 18 | 9 | 9 | 4 | 16 | 2 | 27 | 0 | 133 | 3 | 16.98 | 4.45 | 3.81 | 1.11 | 45.9 | 12.0 | 1.05 | .280 | 2.51 | 5.01 |
| 11 | | C. Kimbrel | 1.000 | 22 | July | 1 | 0 | 0 | 3.74 | 33 | 0 | 0 | 12 | 21.2 | 19 | 9 | 9 | 3 | 12 | 2 | 15 | 0 | 94 | 3 | 13.71 | 4.98 | 2.75 | 1.25 | 35.1 | 12.8 | 1.43 | .364 | 3.74 | 7.89 |
| 12 | | R. Ross Jr. | 1.000 | 20 | September | 1 | 0 | 0 | 3.07 | 14 | 0 | 0 | 6 | 14.2 | 18 | 5 | 5 | 2 | 7 | 0 | 11 | 0 | 68 | 1 | 8.59 | 4.30 | 2.00 | 1.23 | 20.6 | 10.3 | 1.70 | .356 | 3.07 | 11.05 |
| 13 | | H. Hembree | 1.000 | 38 | June | 3 | 0 | 0 | 1.77 | 46 | 0 | 0 | 0 | 40.2 | 25 | 8 | 8 | 5 | 13 | 1 | 7 | 1 | 158 | 0 | 10.18 | 2.88 | 3.54 | 1.11 | 29.1 | 8.2 | 0.93 | .215 | 1.77 | 5.53 |
| 14 | | J. Kelly | 1.000 | 27 | April | 4 | 0 | 7 | 4.11 | 54 | 0 | 0 | 1 | 57.0 | 46 | 26 | 26 | 5 | 27 | 3 | 6 | 0 | 242 | 4 | 8.53 | 4.26 | 2.00 | 0.79 | 22.3 | 11.2 | 1.28 | .268 | 4.11 | 7.26 |
| 15 | | H. Hembree | 1.000 | 40 | September | 2 | 0 | 0 | 3.23 | 39 | 0 | 0 | 0 | 39.0 | 26 | 14 | 15 | 7 | 11 | 1 | 6 | 2 | 151 | 1 | 9.00 | 2.54 | 3.55 | 1.62 | 25.8 | 7.3 | 0.95 | .204 | 3.46 | 6.00 |
| 16 | | T. Layne | 1.000 | 27 | September | 2 | 0 | 0 | 2.03 | 9 | 0 | 0 | 0 | 13.1 | 10 | 3 | 4 | 0 | 9 | 0 | 1 | 1 | 56 | 1 | 6.08 | 6.08 | 1.00 | 0.00 | 16.1 | 16.1 | 1.43 | .263 | 2.70 | 6.75 |
| 17 | | M. Albers | 1.000 | 22 | July | 1 | 0 | 0 | 0.40 | 22 | 0 | 0 | 0 | 22.1 | 12 | 1 | 1 | 1 | 13 | 0 | 4 | 2 | 85 | 1 | 8.87 | 5.24 | 1.69 | 0.40 | 25.9 | 15.3 | 1.12 | .224 | 0.40 | 4.84 |
| 18 | | J. Lopez | 1.000 | 27 | May | 1 | 0 | 0 | 4.35 | 13 | 0 | 0 | 0 | 20.2 | 20 | 10 | 12 | 2 | 8 | 1 | 2 | 0 | 85 | 0 | 5.66 | 3.48 | 1.63 | 0.87 | 15.3 | 9.4 | 1.35 | .295 | 5.23 | 8.71 |
| 19 | | H. Okajima | 1.000 | 48 | May | 1 | 0 | 0 | 1.35 | 42 | 0 | 0 | 3 | 53.1 | 39 | 8 | 8 | 3 | 13 | 0 | 8 | 0 | 209 | 0 | 7.09 | 2.19 | 3.23 | 0.51 | 20.1 | 6.2 | 0.98 | .238 | 1.35 | 6.58 |
| 20 | | J. Lopez | 1.000 | 35 | September | 1 | 0 | 0 | 1.57 | 20 | 0 | 0 | 1 | 23.0 | 15 | 4 | 4 | 1 | 14 | 1 | 5 | 0 | 96 | 1 | 7.83 | 5.48 | 1.43 | 0.39 | 20.8 | 14.6 | 1.26 | .233 | 1.57 | 5.87 |
| 21 | | B. Corey | 1.000 | 21 | September | 2 | 0 | 0 | 4.07 | 16 | 0 | 0 | 0 | 24.1 | 20 | 11 | 11 | 0 | 8 | 2 | 2 | 0 | 96 | 0 | 5.92 | 2.96 | 2.00 | 0.00 | 16.7 | 8.3 | 1.15 | .286 | 4.07 | 7.40 |
| 22 | | M. Delcarmen | 1.000 | 45 | September | 1 | 0 | 0 | 4.84 | 43 | 0 | 0 | 1 | 44.2 | 44 | 24 | 25 | 7 | 21 | 2 | 7 | 2 | 199 | 0 | 8.66 | 4.23 | 2.05 | 1.41 | 21.6 | 10.6 | 1.46 | .294 | 5.04 | 8.87 |
| 23 | | M. Delcarmen | 1.000 | 64 | August | 3 | 0 | 0 | 3.59 | 52 | 0 | 0 | 1 | 62.2 | 50 | 25 | 27 | 5 | 35 | 2 | 9 | 3 | 270 | 0 | 7.47 | 5.03 | 1.49 | 0.72 | 19.3 | 13.0 | 1.36 | .256 | 3.88 | 7.18 |
| 24 | | K. Foulke | 1.000 | 30 | September | 3 | 0 | 0 | 2.64 | 25 | 0 | 0 | 6 | 30.2 | 28 | 9 | 9 | 3 | 4 | 3 | 14 | 0 | 124 | 0 | 7.34 | 1.17 | 6.25 | 0.88 | 20.2 | 3.2 | 1.04 | .281 | 2.64 | 8.22 |
| 25 | | M. Myers | 1.000 | 24 | September | 1 | 0 | 0 | 1.23 | 8 | 0 | 0 | 0 | 14.2 | 10 | 2 | 2 | 1 | 8 | 0 | 4 | 2 | 61 | 1 | 4.91 | 4.91 | 1.00 | 0.61 | 13.1 | 13.1 | 1.23 | .205 | 1.23 | 6.14 |
StatMuse has game-level data for games pitched going back to the 1908 season.
Some of the information used here was obtained free of charge from Retrosheet.
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MLB 2026 Standings
| NL East | W | L | PCT | GB |
|---|---|---|---|---|
84 | 57 | .596 | ||
79 | 62 | .560 | 5.0 | |
71 | 72 | .497 | 14.0 | |
67 | 76 | .469 | 18.0 | |
64 | 78 | .451 | 20.5 | |
| NL Central | W | L | PCT | GB |
88 | 54 | .620 | ||
81 | 62 | .566 | 7.5 | |
71 | 71 | .500 | 17.0 | |
70 | 72 | .493 | 18.0 | |
67 | 74 | .475 | 20.5 | |
| NL West | W | L | PCT | GB |
84 | 57 | .596 | ||
74 | 67 | .525 | 10.0 | |
74 | 68 | .521 | 10.5 | |
59 | 84 | .413 | 26.0 | |
54 | 87 | .383 | 30.0 |
Braves
Phillies
Marlins
Nationals
Mets
Brewers
Cubs
Cardinals
Pirates
Reds
Dodgers
Padres
Diamondbacks
Giants
Rockies| AL East | W | L | PCT | GB |
|---|---|---|---|---|
84 | 57 | .596 | ||
80 | 61 | .567 | 4.0 | |
77 | 65 | .542 | 7.5 | |
71 | 71 | .500 | 13.5 | |
69 | 73 | .486 | 15.5 | |
| AL Central | W | L | PCT | GB |
74 | 67 | .525 | ||
72 | 70 | .507 | 2.5 | |
67 | 74 | .475 | 7.0 | |
64 | 77 | .454 | 10.0 | |
63 | 79 | .444 | 11.5 | |
| AL West | W | L | PCT | GB |
73 | 69 | .514 | ||
70 | 72 | .493 | 3.0 | |
66 | 76 | .465 | 7.0 | |
56 | 86 | .394 | 17.0 | |
53 | 88 | .376 | 19.5 |
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Twins
Tigers
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Athletics