| Date | Team | Opp | Result | Dec | GS | IP | AB | BF | H | R | ER | HR | BB | IBB | SO | HBP | SH | SF | WP | BK | ERA | WHIP | K/9 | BB/9 | FIP | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | ||||||||||||||||||||||||||
| Season Total 3-3 | 9 | 55.0 | 201 | 222 | 45 | 21 | 21 | 3 | 14 | — | 67 | 0 | — | — | 0 | — | 3.44 | 1.07 | 10.96 | 2.29 | — | 104 | ||||
| 2009 | ||||||||||||||||||||||||||
| Season Total 1-1, 1 SV | 3 | 21.1 | 76 | 93 | 22 | 12 | 12 | 4 | 11 | — | 24 | 0 | — | — | 0 | — | 5.07 | 1.55 | 10.14 | 4.65 | — | 63 |
| Year | Level | Team | Org | G | PA | AB | R | H | TB | 2B | 3B | HR | RBI | BB | SO | SB | CS | HBP | SF | SAC | GIDP | AVG | OBP | SLG | OPS | BABIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2014 | MLB | Boston Red Sox | Boston Red Sox | 19 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0.000 | — |
| 2014 | MLB | Career (1 yr) | 19 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0.000 | — |
| Year | Level | Team | Org | G | GS | IP | H | R | ER | BB | SO | HR | W | L | SV | ERA | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2012 | AA | Portland | Boston Red Sox | 5 | 5 | 25.0 | 23 | 12 | 11 | 5 | 23 | 2 | 3 | 1 | 0 | 3.96 | 1.12 | 8.28 |
| 2013 | AA | Portland | Boston Red Sox | 11 | 10 | 65.2 | 51 | 29 | 25 | 17 | 74 | 6 | 5 | 1 | 0 | 3.43 | 1.04 | 10.14 |
| 2013 | AAA | Pawtucket | Boston Red Sox | 6 | 6 | 35.1 | 39 | 13 | 11 | 13 | 34 | 6 | 3 | 1 | 0 | 2.80 | 1.47 | 8.66 |
| 2013 | MLB | Boston Red Sox | Boston Red Sox | 20 | 3 | 41.2 | 44 | 23 | 23 | 15 | 47 | 5 | 6 | 3 | 0 | 4.97 | 1.42 | 10.15 |
| 2014 | AAA | Pawtucket | Boston Red Sox | 11 | 11 | 61.1 | 61 | 28 | 28 | 17 | 55 | 10 | 7 | 1 | 0 | 4.11 | 1.27 | 8.07 |
| 2014 | MLB | Boston Red Sox | Boston Red Sox | 19 | 15 | 87.0 | 88 | 57 | 50 | 36 | 70 | 11 | 1 | 10 | 0 | 5.17 | 1.43 | 7.24 |
| 2016 | AA | Portland | Boston Red Sox | 4 | 0 | 10.0 | 15 | 10 | 10 | 7 | 5 | 3 | 0 | 0 | 0 | 9.00 | 2.20 | 4.50 |
| 2017 | AAA | Pawtucket | Boston Red Sox | 18 | 0 | 29.0 | 16 | 6 | 5 | 13 | 35 | 1 | 4 | 1 | 2 | 1.55 | 1.00 | 10.86 |
| 2017 | MLB | Boston Red Sox | Boston Red Sox | 33 | 0 | 39.2 | 37 | 17 | 14 | 11 | 37 | 7 | 1 | 1 | 0 | 3.18 | 1.21 | 8.39 |
| 2018 | AAA | Pawtucket | Boston Red Sox | 17 | 0 | 30.0 | 21 | 14 | 13 | 5 | 34 | 3 | 2 | 1 | 1 | 3.90 | 0.87 | 10.20 |
| 2018 | MLB | Boston Red Sox | Boston Red Sox | 43 | 0 | 41.1 | 34 | 15 | 15 | 16 | 37 | 6 | 6 | 1 | 0 | 3.27 | 1.21 | 8.06 |
| 2019 | MLB | Boston Red Sox | Boston Red Sox | 73 | 0 | 71.2 | 29 | 18 | 15 | 45 | 104 | 1 | 10 | 1 | 16 | 1.88 | 1.03 | 13.06 |
| 2021 | AAA | Worcester | Boston Red Sox | 7 | 0 | 7.0 | 3 | 1 | 1 | 4 | 10 | 0 | 0 | 0 | 1 | 1.29 | 1.00 | 12.86 |
| 2021 | MLB | Boston Red Sox - Chicago | Boston Red Sox - Chicago | 29 | 0 | 28.0 | 36 | 20 | 17 | 21 | 25 | 4 | 1 | 2 | 0 | 5.46 | 2.04 | 8.04 |
| 2013–2021 | MLB | Career (6 yrs) | 217 | 18 | 309.1 | 268 | 150 | 134 | 144 | 320 | 34 | 25 | 18 | 16 | 3.90 | 1.33 | 9.31 | |
| 2013–2021 | AAA | Career (5 yrs) | 59 | 17 | 162.2 | 140 | 62 | 58 | 52 | 168 | 20 | 16 | 4 | 4 | 3.21 | 1.18 | 9.30 | |
| 2012–2016 | AA | Career (3 yrs) | 20 | 15 | 100.2 | 89 | 51 | 46 | 29 | 102 | 11 | 8 | 2 | 0 | 4.11 | 1.17 | 9.12 |