Jon Matlack vs. John Slappey — Career Comparison

Looking at the career totals, Jon Matlack and John Slappey are fairly close on the surface numbers. Jon Matlack posted stronger numbers in ERA (3.18 vs 7.11) and WHIP (1.262 vs 3.000). John Slappey had the advantage in home runs allowed (0 per nine innings vs 0.61). By the career numbers, Jon Matlack 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.