Art Mahaffey
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1966-04-28 | STL | @ HOU | L, 4-2 | 4.0 | 1 | 0 | 0 | 3 | 4 | 15 | 0 | 0 | 0 | 3 | 2 | RP |
| 1966-05-07 | STL | vs. SFG | L, 15-2 | 2.1 | 6 | 7 | 7 | 3 | 1 | 15 | 1 | 0 | 1 | 1 | 3 | SP, L |
| 1966-05-15 | STL | vs. ATL | W, 5-3 | 5.1 | 6 | 3 | 3 | 2 | 3 | 23 | 0 | 0 | 0 | 6 | 6 | SP, W |
| 1966-05-21 | STL | @ CIN | L, 4-1 | 6.0 | 5 | 3 | 3 | 7 | 2 | 28 | 1 | 0 | 1 | 3 | 11 | SP, L |
| 1966-05-27 | STL | vs. CIN | L, 6-5 | 3.0 | 5 | 5 | 3 | 0 | 1 | 14 | 0 | 0 | 3 | 5 | 3 | SP, L |
| 1966-06-05 | STL | @ ATL | L, 14-4 | 2.0 | 3 | 3 | 3 | 0 | 1 | 9 | 0 | 0 | 1 | 1 | 4 | RP |
| 1966-06-13 | STL | @ NYM | W, 4-1 | 1.2 | 1 | 0 | 0 | 0 | 3 | 7 | 0 | 0 | 0 | 0 | 2 | RP, SV |
| 1966-06-17 | STL | vs. PHI | L, 6-5 | 4.1 | 3 | 0 | 0 | 1 | 1 | 16 | 2 | 0 | 0 | 3 | 8 | RP |
| 1966-06-28 | STL | vs. SFG | L, 7-1 | 2.0 | 3 | 3 | 3 | 1 | 1 | 11 | 1 | 1 | 1 | 0 | 5 | RP |
| 1966-07-04 | STL | @ SFG | L, 3-2 | 2.0 | 0 | 0 | 0 | 1 | 0 | 7 | 0 | 0 | 0 | 3 | 3 | RP |
| 1966-07-14 | STL | @ CIN | L, 9-2 | 2.0 | 1 | 0 | 0 | 1 | 2 | 8 | 1 | 0 | 0 | 1 | 3 | RP |
| 1966-07-17 | STL | vs. CHC | L, 7-2 | 0.1 | 3 | 3 | 3 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 1 | SP, L |
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
| Totals, 12 G | STL | 10 Teams | 2 - 10 | 35.0 | 37 | 27 | 25 | 21 | 19 | 159 | 6 | 1 | 7 | 26 | 51 | 1 - 4, 5 GS, 1 SV |
| 162 Game Avg. | 140.0 | 148 | 108 | 100 | 84 | 76 | 636 | 24 | 4 | 28 | 104 | 204 |