Ron Musselman

One category carried Ron Musselman and the rest pulled him back: +0.2 from ERA, against a career total of -6.5. The peak came in 1984, -1.9, 227th that season and 29901st of 51,303 player-seasons on record. The value came from ERA (+0.2). It leaked back out through strikeouts (-2.5), saves (-1.1) and WHIP (-0.7).