Amos Watson

Amos Watson was worth +0.9 in ERA alone, more than his entire career total of -1.5 once everything else is counted against him. The peak came in 1947, +3.2, 59th that season and 8586th of 51,303 player-seasons on record. The value came from ERA (+0.9). It leaked back out through strikeouts (-0.6) and wins (-0.4).