Phil Slattery vs. Pop Williams — Career Comparison

On the career pitching numbers, Phil Slattery posted a stronger line than Pop Williams. Phil Slattery posted stronger numbers in ERA (0 vs 3.17) and WHIP (0.750 vs 1.395). By the career numbers, Phil Slattery 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.