Bill Irwin vs. Al Mahon — Career Comparison

Looking at the career totals, Bill Irwin and Al Mahon are fairly close on the surface numbers. Bill Irwin posted stronger numbers in ERA (5.82 vs 22.85) and WHIP (1.529 vs 4.154). Al Mahon had the advantage in home runs allowed (0 per nine innings vs 1.06). By the career numbers, Bill Irwin 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.