Roy Mahaffey
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1931-04-15 | PHA | @ WSH | L, 7-1 | 2.2 | 4 | 1 | 1 | 1 | 0 | 13 | 0 | 0 | 0 | 5 | 3 | RP |
| 1931-04-21 | PHA | @ NYY | L, 12-1 | 1.0 | 4 | 4 | 4 | 1 | 1 | 7 | 1 | 0 | 0 | 1 | 0 | SP, L |
| 1931-04-24 | PHA | vs. WSH | W, 10-7 | 1.0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 1 | 1 | RP, W |
| 1931-05-04 | PHA | vs. BOS | L, 7-5 | 1.0 | 1 | 1 | 1 | 1 | 0 | 4 | 0 | 0 | 0 | 1 | 0 | RP |
| 1931-05-21 | PHA | @ DET | W, 12-5 | 5.1 | 7 | 4 | 4 | 4 | 3 | 26 | 0 | 0 | 0 | 6 | 6 | RP, W |
| 1931-05-25 | PHA | vs. NYY | W, 16-4 | 9.0 | 6 | 4 | 4 | 8 | 5 | 41 | 1 | 0 | 0 | 7 | 15 | SP, W, CG |
| 1931-05-30 | PHA | @ BOS | L, 6-5 | 8.1 | 10 | 4 | 4 | 2 | 2 | 37 | 2 | 2 | 0 | 5 | 18 | SP |
| 1931-06-05 | PHA | vs. CHW | L, 7-5 | 5.2 | 6 | 4 | 3 | 3 | 5 | 27 | 0 | 0 | 1 | 3 | 9 | SP |
| 1931-06-07 | PHA | @ DET | W, 12-2 | 9.0 | 12 | 2 | 2 | 7 | 2 | 47 | 3 | 0 | 0 | 19 | 5 | SP, W, CG |
| 1931-06-12 | PHA | vs. SLB | W, 6-2 | 9.0 | 4 | 2 | 2 | 5 | 3 | 35 | 1 | 0 | 0 | 8 | 14 | SP, W, CG |
| 1931-06-22 | PHA | @ CHW | L, 8-2 | 2.1 | 4 | 3 | 2 | 1 | 0 | 11 | 0 | 1 | 0 | 2 | 2 | RP |
| 1931-06-23 | PHA | @ SLB | L, 5-4 | 6.0 | 7 | 4 | 4 | 0 | 1 | 26 | 1 | 0 | 1 | 5 | 12 | SP |
| 1931-06-28 | PHA | @ DET | W, 9-1 | 9.0 | 5 | 1 | 0 | 6 | 1 | 37 | 2 | 0 | 0 | 18 | 5 | SP, W, CG |
| 1931-07-04 | PHA | vs. BOS | W, 9-7 | 1.1 | 3 | 4 | 4 | 3 | 1 | 11 | 0 | 0 | 0 | 1 | 2 | SP |
| 1931-07-09 | PHA | @ NYY | L, 9-4 | 6.1 | 10 | 8 | 8 | 2 | 2 | 31 | 2 | 0 | 1 | 9 | 8 | SP, L |
| 1931-07-12 | PHA | @ BOS | W, 6-2 | 6.0 | 7 | 2 | 2 | 1 | 2 | 25 | 0 | 0 | 1 | 7 | 8 | SP, W, CG |
| 1931-07-16 | PHA | vs. DET | W, 5-3 | 9.0 | 10 | 3 | 0 | 3 | 5 | 36 | 4 | 0 | 0 | 7 | 10 | SP, W, CG |
| 1931-07-20 | PHA | vs. CHW | W, 12-7 | 8.0 | 4 | 1 | 0 | 3 | 2 | 31 | 1 | 0 | 0 | 6 | 14 | RP, W |
| 1931-07-24 | PHA | vs. CLE | W, 2-1 | 6.0 | 3 | 1 | 1 | 3 | 2 | 22 | 0 | 0 | 0 | 4 | 10 | SP, W, CG |
| 1931-07-29 | PHA | vs. SLB | W, 4-2 | 8.0 | 4 | 2 | 2 | 4 | 4 | 31 | 1 | 0 | 0 | 7 | 12 | SP, W |
| 1931-08-06 | PHA | @ NYY | L, 5-3 | 1.0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 2 | 1 | RP |
| 1931-08-09 | PHA | @ NYY | W, 5-3 | 6.0 | 3 | 3 | 0 | 4 | 2 | 26 | 0 | 0 | 0 | 4 | 9 | SP, W |
| 1931-08-16 | PHA | @ CLE | W, 6-4 | 7.2 | 7 | 4 | 4 | 4 | 1 | 34 | 2 | 0 | 1 | 11 | 10 | SP, W |
| 1931-08-21 | PHA | @ CHW | W, 15-12 | 3.2 | 5 | 3 | 3 | 1 | 3 | 17 | 3 | 0 | 0 | 3 | 5 | RP, SV |
| 1931-08-24 | PHA | @ SLB | W, 5-1 | 9.0 | 5 | 1 | 1 | 2 | 4 | 33 | 1 | 0 | 1 | 8 | 14 | SP, W, CG |
| 1931-08-28 | PHA | vs. NYY | W, 5-4 | 7.0 | 7 | 4 | 4 | 4 | 1 | 31 | 1 | 0 | 1 | 7 | 11 | SP, W |
| 1931-09-02 | PHA | vs. WSH | L, 5-2 | 5.0 | 5 | 4 | 4 | 4 | 3 | 24 | 1 | 0 | 1 | 4 | 7 | SP, L |
| 1931-09-07 | PHA | vs. NYY | L, 15-3 | 0.0 | 2 | 5 | 5 | 3 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | SP, L |
| 1931-09-12 | PHA | vs. SLB | L, 10-2 | 6.0 | 11 | 6 | 5 | 2 | 2 | 30 | 2 | 0 | 1 | 2 | 11 | RP |
| 1931-09-22 | PHA | vs. DET | W, 8-6 | 3.0 | 5 | 2 | 2 | 0 | 1 | 13 | 1 | 0 | 0 | 2 | 5 | RP, SV |
| 1931-10-05 | PHA | vs. STL | L, 5-2 | 1.0 | 1 | 1 | 1 | 1 | 0 | 5 | 1 | 0 | 0 | 1 | 1 | RP |
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
| Totals | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ||||
| 162 Game Avg. | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |