Big Jeff Pfeffer
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911-04-14 | BSN | vs. BRO | L, 15-2 | 1.0 | 3 | 4 | 0 | 2 | 2 | 9 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-04-15 | BSN | vs. PHI | W, 5-4 | 9.0 | 7 | 4 | 0 | 6 | 1 | 40 | 0 | 0 | 0 | 0 | 0 | RP, W |
| 1911-04-24 | BSN | @ BRO | W, 3-0 | 9.0 | 6 | 0 | 0 | 1 | 0 | 33 | 0 | 0 | 0 | 0 | 0 | SP, W, CG, SHO |
| 1911-04-28 | BSN | @ NYG | W, 9-3 | 5.2 | 8 | 2 | 0 | 4 | 1 | 27 | 0 | 0 | 0 | 0 | 0 | RP, W |
| 1911-05-03 | BSN | @ PHI | W, 4-3 | 9.0 | 8 | 3 | 0 | 5 | 0 | 38 | 1 | 1 | 0 | 0 | 0 | SP, W, CG |
| 1911-05-08 | BSN | vs. NYG | W, 5-4 | 9.0 | 8 | 4 | 0 | 9 | 3 | 42 | 1 | 0 | 0 | 0 | 0 | SP, W, CG |
| 1911-05-12 | BSN | vs. CIN | L, 18-8 | 6.0 | 13 | 10 | 0 | 3 | 2 | 35 | 0 | 0 | 0 | 0 | 0 | SP, L |
| 1911-05-16 | BSN | vs. PIT | L, 11-7 | 1.0 | 6 | 6 | 0 | 1 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | SP, L |
| 1911-05-27 | BSN | vs. BRO | L, 9-8 | 3.0 | 2 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-05-30 | BSN | vs. PHI | L, 11-4 | 2.1 | 1 | 2 | 0 | 2 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-06-02 | BSN | @ CIN | W, 8-5 | 1.0 | 0 | 0 | 0 | 1 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | RP, SV |
| 1911-06-05 | BSN | @ CIN | L, 9-2 | 8.0 | 14 | 9 | 0 | 4 | 3 | 39 | 2 | 0 | 0 | 0 | 0 | SP, L, CG |
| 1911-06-13 | BSN | @ CHC | L, 5-4 | 4.1 | 3 | 3 | 0 | 1 | 2 | 15 | 0 | 0 | 1 | 0 | 0 | RP, L |
| 1911-07-04 | BSN | @ BRO | W, 3-2 | 1.2 | 1 | 0 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | RP, W |
| 1911-07-15 | BSN | vs. CHC | W, 17-12 | 2.1 | 3 | 1 | 0 | 4 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | RP, SV |
| 1911-07-17 | BSN | vs. CHC | L, 7-6 | 1.0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-07-18 | BSN | vs. CHC | L, 14-6 | 2.0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-07-19 | BSN | vs. CHC | L, 5-3 | 2.0 | 2 | 2 | 0 | 2 | 1 | 10 | 0 | 0 | 1 | 0 | 0 | RP, L |
| 1911-07-20 | BSN | vs. PIT | L, 9-5 | 0.2 | 2 | 5 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-07-27 | BSN | @ CHC | L, 8-2 | 2.0 | 2 | 1 | 1 | 0 | 1 | 8 | 0 | 0 | 1 | 0 | 0 | RP |
| 1911-07-29 | BSN | @ PIT | L, 10-2 | 5.0 | 7 | 2 | 2 | 4 | 1 | 19 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-08-08 | BSN | @ CIN | L, 3-0 | 1.0 | 2 | 1 | 0 | 1 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-08-19 | BSN | vs. CHC | L, 16-8 | 3.2 | 7 | 7 | 0 | 2 | 1 | 19 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-09-07 | BSN | vs. PHI | L, 13-5 | 1.0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-09-19 | BSN | @ STL | L, 13-12 | 1.0 | 4 | 4 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | RP |
| 1911-10-09 | BSN | @ PHI | W, 13-10 | 5.2 | 7 | 4 | 0 | 2 | 4 | 25 | 0 | 0 | 0 | 0 | 0 | RP, W |
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
| Totals | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ||||
| 162 Game Avg. | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |