Bio
- Height
- 6' 6"
- Debut
- 2008
- Draft
- 2006Rd 2, Pk 71
- College
- San Diego State
Bio
- Height
- 6' 6"
- Debut
- 2008
- Draft
- 2006Rd 2, Pk 71
- College
- San Diego State
Stats
Standard
Career regular season
- GP
- 258
- W
- 64
- L
- 74
- ERA
- 4.31
- IP
- 1201.0
- K
- 1,004
- BB
- 498
- WHIP
- 1.40
Ranked among MLB players who qualify (W, IP, K: 10+ games; ERA, WHIP: 100+ IP) that season; only the top 50 are shown. How each stat qualifies: glossary.
| GP: Games the player appeared in, however briefly. | W: Games in which this pitcher was credited with the win. | L: Games in which this pitcher was charged with the loss. | ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent. | IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | K: Batters this pitcher struck out. | BB: Times the batter reached first base on four balls. | WHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite. | ||
|---|---|---|---|---|---|---|---|---|---|
| 2008 | BOS | 36 | 6 | 5 | 3.16 | 88.1 | 68 | 40 | 1.22 |
| 2009 |  BOS/CLE | 42 | 4 | 10 | 4.52 | 129.1 | 119 | 60 | 1.45 |
| 2010 | CLE | 34 | 6 | 13 | 4.70 | 180.0 | 140 | 73 | 1.50 |
| 2011 | CLE | 34 | 12 | 10 | 3.21 | 216.0 | 158 | 65 | 1.28 |
| 2012 | CLE | 34 | 11 | 15 | 4.93 | 206.1 | 159 | 88 | 1.45 |
| 2013 | CLE | 32 | 14 | 10 | 3.45 | 193.0 | 195 | 76 | 1.20 |
| 2014 |  CLE/STL | 28 | 7 | 9 | 5.88 | 128.2 | 116 | 69 | 1.63 |
| 2015 | BOS | 18 | 4 | 2 | 5.61 | 59.1 | 49 | 27 | 1.60 |
Career Postseason
- GP
- 10
- W
- 1
- L
- 0
- ERA
- 1.54
- IP
- 11.2
- K
- 11
- BB
- 5
- WHIP
- 1.37
Expanded
Career regular season
- QS
- 92
- CG
- 7
- SHO
- 4
- K/9
- 7.5
- GB
- 2,092
- FB
- 1,525
- G/F
- 1.40
- WP
- 66
Ranked among MLB players who qualify (QS, CG, SHO: 10+ GS; K/9: 100+ IP) that season; only the top 50 are shown. How each stat qualifies: glossary.
| QS: Quality starts: six innings or more with no more than three earned runs. | CG: Complete games, pitched from the first out to the last. | SHO: Shutouts — complete games with no run allowed. | K/9: Strikeouts for every nine innings pitched. | GB: Ground balls hit against this pitcher. | FB: Fly balls hit against this pitcher. | G/F: Ground balls for every fly ball hit against this pitcher. | WP: Wild pitches — throws the catcher had no chance to stop. | ||
|---|---|---|---|---|---|---|---|---|---|
| 2008 | BOS | 5 | 0 | 0 | 6.9 | 137 | 112 | 1.2 | 1 |
| 2009 | BOS/CLE | 6 | 1 | 0 | 8.3 | 213 | 167 | 1.3 | 5 |
| 2010 | CLE | 12 | 1 | 1 | 7.0 | 350 | 227 | 1.5 | 12 |
| 2011 | CLE | 22 | 1 | 0 | 6.6 | 379 | 295 | 1.3 | 5 |
| 2012 | CLE | 18 | 1 | 0 | 6.9 | 370 | 276 | 1.3 | 14 |
| 2013 | CLE | 18 | 3 | 3 | 9.1 | 309 | 203 | 1.5 | 8 |
| 2014 | CLE/STL | 8 | 0 | 0 | 8.1 | 236 | 156 | 1.5 | 14 |
| 2015 | BOS | 3 | 0 | 0 | 7.4 | 98 | 89 | 1.1 | 7 |
What were Justin Masterson's career stats?
Justin Masterson played 8 seasons for the Red Sox and the Guardians. He had 64 wins and 1,004 strikeouts with a 4.31 ERA over 1,201.0 innings. His best season was 2013: 14 wins, a 3.45 ERA and 195 strikeouts.
More on Justin Masterson
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Compare Justin Masterson with Tyson Ross, Chris Capuano, Chan Ho Park