J.A. Happ ERA in 2021
5.792021 Regular Season
J.A. Happ posted a 5.79 ERA in the 2021 regular season.
- 14th-best of J.A. Happ's 15 seasons on file; the best is 2.93 in 2009.
- Up 2.32 from 3.47 in 2020.
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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2007 |  PHI | 1 | 0 | 1 | 11.25 | 4.0 | 5 | 2 | 2.25 | 0 |
| 2008 | PHI | 8 | 1 | 0 | 3.69 | 31.2 | 26 | 14 | 1.33 | 0 |
| 2009 | PHI | 35 | 12 | 4 | 2.93 | 166.0 | 119 | 56 | 1.23 | 0 |
| 2010 |  PHI/HOU | 16 | 6 | 4 | 3.40 | 87.1 | 70 | 47 | 1.37 | 0 |
| 2011 | HOU | 28 | 6 | 15 | 5.35 | 156.1 | 134 | 83 | 1.54 | 0 |
| 2012 |  HOU/TOR | 28 | 10 | 11 | 4.79 | 144.2 | 144 | 56 | 1.40 | 0 |
| 2013 | TOR | 18 | 5 | 7 | 4.56 | 92.2 | 77 | 45 | 1.47 | 0 |
| 2014 | TOR | 30 | 11 | 11 | 4.22 | 158.0 | 133 | 51 | 1.34 | 0 |
| 2015 |  SEA/PIT | 32 | 11 | 8 | 3.61 | 172.0 | 151 | 45 | 1.27 | 0 |
| 2016 | TOR | 32 | 20 | 4 | 3.18 | 195.0 | 163 | 60 | 1.17 | 0 |
| 2017 | TOR | 25 | 10 | 11 | 3.53 | 145.1 | 142 | 46 | 1.31 | 0 |
| 2018 |  TOR/NYY | 31 | 17 | 6 | 3.65 | 177.2 | 193 | 51 | 1.13 | 0 |
| 2019 | NYY | 31 | 12 | 8 | 4.91 | 161.1 | 140 | 49 | 1.30 | 0 |
| 2020 | NYY | 9 | 2 | 2 | 3.47 | 49.1 | 42 | 15 | 1.05 | 0 |
| 2021 |  MIN/STL | 30 | 10 | 8 | 5.79 | 152.1 | 122 | 48 | 1.48 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV