Mark Johnson vs. Bill Slayback — Career Comparison

On the career pitching numbers, Bill Slayback posted a stronger line than Mark Johnson. Bill Slayback posted stronger numbers in ERA (3.84 vs 7.5) and WHIP (1.373 vs 1.750). By the career numbers, Bill Slayback had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.