2021-09-29 J.A. Happ PITCH WAA
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
| -005- | -5.80 | 98.3 | 6.77 | 19 | 0 | MIN |
| -005- | 0.32 | 47.7 | 3.97 | 10 | 0 | SLN |
| -005- | -5.48 | 146.0 | 5.86 | 0 | 0 | TOT |
The line graph below shows daily WAA and Batting Average for reference. Fluctuation in batting average decreases as a season progresses. BA for pitchers is batting average against.
J.A. Happ 2021 Bi-Weekly Snapshots
Post Season J.A. Happ WAA
J.A. Happ Post Season Games
| Rank | WAA | IP | ERA | Gs | Gr | Tm |
| -080- | -1.4 | 8.3 | 10.8 | 1 | 4 | NYA |
| -080- | 0.21 | 10 | 2.7 | 2 | 0 | TOR |
| -080- | -0.27 | 9.3 | 4.82 | 1 | 7 | PHI |
| -080- | -1.45 | 27.7 | 5.86 | 0 | 0 | TOT |