Art Johnson

Art Johnson is the extreme version of a specialist. +0.5 of roto value came from ERA, yet his career total is only -2.6. His best year was 1941: +2.4 roto value, 73rd that season and 10449th of 51,303 player-seasons on record. He banked roto value in ERA (+0.5) and gave it back in strikeouts (-0.9), saves (-0.7) and WHIP (-0.3).