Don Aase vs. John Firth — Career Comparison

Looking at the career totals, Don Aase and John Firth are fairly close on the surface numbers. Don Aase posted stronger numbers in ERA (3.8 vs 8) and WHIP (1.431 vs 2.111). John Firth had the advantage in home runs allowed (0 per nine innings vs 0.72). By the career numbers, Don Aase 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.