Rolla Mapel career ERA
4.50Career Regular Season
Rolla Mapel has a career ERA of 4.50 over 1 regular season.
| Season | Team | GPGP: Games the player appeared in, however briefly. | WW: Games in which this pitcher was credited with the win. | LL: Games in which this pitcher was charged with the loss. | ERAERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent. | IPIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | KK: Batters this pitcher struck out. | BBBB: Times the batter reached first base on four balls. | WHIPWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite. | SVSV: Games finished by protecting a narrow lead to the last out. |
|---|---|---|---|---|---|---|---|---|---|---|
| 1919 |  BAL | 4 | 0 | 3 | 4.50 | 20.0 | 2 | 17 | 1.70 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
Figures come from ESPN's box scores and were last read on November 2, 2026.