Kirk McCaskill vs. Dutch Ruether — Career Comparison

On the career pitching numbers, Dutch Ruether posted a stronger line than Kirk McCaskill. Dutch Ruether posted stronger numbers in ERA (3.5 vs 4.12) and home runs allowed (0.23 per nine innings vs 0.8). By the career numbers, Dutch Ruether 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.