Justin Masterson was 4-2 with an ERA of 5.61 and 49 strikeouts in 18 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 |  | J. Masterson | 2015 |  BOS | 18 | 4 | 2 | .667 | 9 | 5.61 | 49 | 0 | 0 | 0 | 59.1 | 68 | 37 | 38 | 7 | 27 | 10 | 4 | 0 | 273 | 7 | 7.43 | 4.10 | 1.81 | 1.06 | 17.9 | 9.9 | 1.60 | .339 | 5.76 | 135 | 4.88 | 123 | 10.31 | -6.3 |
Games
| NAME | DATE | SEASON | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | | J. Masterson | 8/9/2015 | 2015 | BOS | @ |  DET | 0 | 9.00 | 1 | 0 | 0 | 0 | 1.0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 5 | 0 | |
| 2 | | J. Masterson | 8/7/2015 | 2015 | BOS | @ | DET | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.1 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 8 | 0 | |
| 3 | | J. Masterson | 8/1/2015 | 2015 | BOS | vs |  TBR | 0 | 9.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 4 | 1 | |
| 4 | | J. Masterson | 7/28/2015 | 2015 | BOS | vs |  CWS | 0 | 5.40 | 4 | 0 | 0 | 0 | 3.1 | 4 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 15 | 0 | |
| 5 | | J. Masterson | 7/25/2015 | 2015 | BOS | vs | DET | 0 | 0.00 | 1 | 0 | 0 | 0 | 2.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | |
| 6 | | J. Masterson | 7/24/2015 | 2015 | BOS | vs | DET | W | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 4 | 1 |
| 7 | | J. Masterson | 7/21/2015 | 2015 | BOS | @ |  HOU | 0 | 16.20 | 2 | 0 | 0 | 0 | 1.2 | 4 | 3 | 3 | 1 | 0 | 2 | 0 | 0 | 11 | 1 | |
| 8 | | J. Masterson | 7/18/2015 | 2015 | BOS | @ |  LAA | 0 | 0.00 | 4 | 0 | 0 | 0 | 3.0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 10 | 0 | |
| 9 | | J. Masterson | 7/10/2015 | 2015 | BOS | vs |  NYY | 0 | 0.00 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | |
| 10 | | J. Masterson | 7/3/2015 | 2015 | BOS | vs | HOU | 1 | 12.27 | 2 | 0 | 0 | 0 | 3.2 | 8 | 5 | 5 | 0 | 2 | 0 | 0 | 0 | 21 | 0 | |
| 11 | | J. Masterson | 6/28/2015 | 2015 | BOS | @ | TBR | W | 1 | 0.00 | 6 | 0 | 0 | 0 | 5.0 | 5 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 20 | 1 |
| 12 | | J. Masterson | 5/12/2015 | 2015 | BOS | @ |  OAK | L | 1 | 23.14 | 1 | 0 | 0 | 0 | 2.1 | 6 | 6 | 6 | 2 | 1 | 0 | 0 | 0 | 14 | 0 |
| 13 | | J. Masterson | 5/6/2015 | 2015 | BOS | vs | TBR | L | 1 | 8.31 | 1 | 0 | 0 | 0 | 4.1 | 7 | 4 | 4 | 1 | 6 | 1 | 0 | 0 | 24 | 1 |
| 14 | | J. Masterson | 5/1/2015 | 2015 | BOS | vs | NYY | 1 | 3.00 | 2 | 0 | 0 | 0 | 6.0 | 6 | 2 | 2 | 0 | 3 | 1 | 0 | 0 | 27 | 0 | |
| 15 | | J. Masterson | 4/25/2015 | 2015 | BOS | @ |  BAL | 1 | 3.86 | 3 | 0 | 0 | 0 | 7.0 | 7 | 3 | 3 | 1 | 1 | 1 | 0 | 0 | 30 | 1 | |
| 16 | | J. Masterson | 4/20/2015 | 2015 | BOS | vs | BAL | W | 1 | 1.80 | 6 | 0 | 0 | 0 | 5.0 | 3 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 21 | 0 |
| 17 | | J. Masterson | 4/14/2015 | 2015 | BOS | vs |  WSH | 1 | 13.50 | 4 | 0 | 0 | 0 | 4.2 | 8 | 7 | 7 | 0 | 3 | 2 | 0 | 0 | 26 | 0 | |
| 18 | | J. Masterson | 4/9/2015 | 2015 | BOS | @ |  PHI | W | 1 | 3.00 | 7 | 0 | 0 | 0 | 6.0 | 3 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 23 | 1 |
| Total | 9 | 5.61 | 49 | 0 | 0 | 0 | 59.1 | 68 | 37 | 38 | 7 | 27 | 10 | 4 | 0 | 273 | 7 |
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