Junichi Tazawa career ERA
4.12Career Regular Season
Junichi Tazawa has a career ERA of 4.12 over 9 regular seasons.
- Best season on file: 1.43 in 2012.
- Most recent: 7.07 in 2018.
Figures come from ESPN's box scores and were last read on September 23, 2026.
| 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. | SV: Games finished by protecting a narrow lead to the last out. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2009 |  BOS | 6 | 2 | 3 | 7.46 | 25.1 | 13 | 9 | 2.05 | 0 |
| 2011 | BOS | 3 | 0 | 0 | 6.00 | 3.0 | 4 | 1 | 1.33 | 0 |
| 2012 | BOS | 37 | 1 | 1 | 1.43 | 44.0 | 45 | 5 | 0.95 | 1 |
| 2013 | BOS | 71 | 5 | 4 | 3.16 | 68.1 | 72 | 12 | 1.20 | 0 |
| 2014 | BOS | 71 | 4 | 3 | 2.86 | 63.0 | 64 | 17 | 1.19 | 0 |
| 2015 | BOS | 61 | 2 | 7 | 4.14 | 58.2 | 56 | 13 | 1.33 | 3 |
| 2016 | BOS | 53 | 3 | 2 | 4.17 | 49.2 | 54 | 14 | 1.23 | 0 |
| 2017 |  MIA | 55 | 3 | 5 | 5.69 | 55.1 | 38 | 22 | 1.39 | 0 |
| 2018 |  MIA/LAA | 31 | 1 | 1 | 7.07 | 28.0 | 28 | 16 | 1.82 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV