Boston Red Sox Pitching Stats - 2013
NIGHT
| Pitching | ||||||||||||||||
| NAME | GP | GS | W | L | SV | HLD | IP | H | ER | HR | BB | SO | K/9 | P/GS | WHIP | ERA |
| Clayton Mortensen | 11 | 0 | 1 | 1 | 0 | 0 | 14.2 | 12 | 7 | 1 | 10 | 8 | 4.91 | 0.0 | 1.50 | 4.30 |
| Junichi Tazawa | 14 | 0 | 2 | 1 | 0 | 7 | 14.0 | 11 | 4 | 2 | 3 | 21 | 13.50 | 0.0 | 1.00 | 2.57 |
| Alex Wilson | 12 | 0 | 1 | 0 | 0 | 0 | 13.1 | 11 | 2 | 0 | 7 | 11 | 7.43 | 0.0 | 1.35 | 1.35 |
| Koji Uehara | 12 | 0 | 0 | 0 | 1 | 5 | 10.2 | 9 | 3 | 2 | 2 | 18 | 15.19 | 0.0 | 1.03 | 2.53 |
| Andrew Miller | 14 | 0 | 0 | 1 | 0 | 1 | 10.0 | 7 | 3 | 0 | 5 | 17 | 15.30 | 0.0 | 1.20 | 2.70 |
| Andrew Bailey | 6 | 0 | 0 | 0 | 3 | 2 | 6.0 | 1 | 0 | 0 | 3 | 10 | 15.00 | 0.0 | 0.67 | 0.00 |
| Craig Breslow | 6 | 0 | 1 | 0 | 0 | 1 | 5.2 | 5 | 1 | 0 | 2 | 2 | 3.18 | 0.0 | 1.24 | 1.59 |
| Joel Hanrahan | 6 | 0 | 0 | 1 | 3 | 0 | 5.1 | 8 | 7 | 3 | 4 | 4 | 6.75 | 0.0 | 2.25 | 11.81 |
| Steven Wright | 1 | 0 | 0 | 0 | 0 | 0 | 3.2 | 6 | 5 | 0 | 4 | 4 | 9.82 | 0.0 | 2.73 | 12.27 |
| Daniel Bard | 2 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 1 | 0 | 2 | 1 | 9.00 | 0.0 | 3.00 | 9.00 |
| Jose De La Torre | 1 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 2 | 18.00 | 0.0 | 0.00 | 0.00 |
| Allen Webster | 2 | 2 | 0 | 1 | 0 | 0 | 7.2 | 11 | 10 | 4 | 4 | 7 | 8.22 | 69.0 | 1.96 | 11.74 |
| Alfredo Aceves | 4 | 3 | 1 | 1 | 0 | 0 | 14.0 | 22 | 14 | 5 | 10 | 9 | 5.79 | 88.3 | 2.29 | 9.00 |
| Felix Doubront | 7 | 6 | 3 | 1 | 0 | 0 | 37.1 | 46 | 25 | 2 | 22 | 42 | 10.13 | 101.8 | 1.82 | 6.03 |
| Ryan Dempster | 6 | 6 | 2 | 2 | 0 | 0 | 33.2 | 29 | 14 | 4 | 19 | 39 | 10.43 | 157.2 | 1.43 | 3.74 |
| John Lackey | 3 | 3 | 0 | 3 | 0 | 0 | 16.1 | 21 | 9 | 2 | 5 | 15 | 8.27 | 173.0 | 1.59 | 4.96 |
| Clay Buchholz | 5 | 5 | 3 | 0 | 0 | 0 | 34.2 | 25 | 9 | 2 | 12 | 40 | 10.38 | 191.4 | 1.07 | 2.34 |
| Jon Lester | 4 | 4 | 3 | 0 | 0 | 0 | 29.0 | 19 | 9 | 1 | 3 | 20 | 6.21 | 241.5 | 0.76 | 2.79 |
| Totals | 29 | 29 | 17 | 12 | 7 | 16 | 258.0 | 244 | 123 | 28 | 117 | 270 | 9.42 | 151.7 | 1.40 | 4.29 |
| Bold: Qualified for ERA title (1 inning pitched per team game) |