ShareRolla Mapel career WHIP1.70Career Regular SeasonRolla Mapel has a career WHIP of 1.70 over 1 regular season.Career1919ERAStrikeouts (Pitching)Rolla Mapel career WHIP, season by seasonSeasonTeamGPiGP: Games the player appeared in, however briefly.WiW: Games in which this pitcher was credited with the win.LiL: Games in which this pitcher was charged with the loss.ERAiERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.IPiIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.KiK: Batters this pitcher struck out.BBiBB: Times the batter reached first base on four balls.WHIPiWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.SViSV: Games finished by protecting a narrow lead to the last out.1919BAL4034.5020.02171.700What the columns mean: W · L · ERA · IP · K · BB · WHIP · SVFigures come from ESPN's box scores and were last read on November 2, 2026.Keep goingRolla Mapel ERA in 1919How many strikeouts (pitching) did Rolla Mapel have in 1919?Who led the MLB in ERA in 1919?How many home runs did Aaron Judge hit last season