John Shaffer was 5-3 with an ERA of 1.96 and 36 strikeouts in 8 appearances in his rookie season in 1886.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Shaffer | 1886 | NYM | 8 | 5 | 3 | .625 | 8 | 1.96 | 36 | 8 | 1 | 0 | 69.0 | 40 | 15 | 29 | 0 | 29 | 1 | 0 | 274 | 4 | 4.70 | 3.78 | 1.24 | 0.00 | 13.1 | 10.6 | 1.00 | .192 | 3.78 | 58 | 3.36 | 100 | 5.22 | -0.4 |
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