Sam Frock vs. Bob Vail — Career Comparison

Looking at the career totals, Sam Frock and Bob Vail are fairly close on the surface numbers. Sam Frock posted stronger numbers in ERA (3.23 vs 6) and WHIP (1.344 vs 1.467). Bob Vail had the advantage in home runs allowed (0 per nine innings vs 0.24). By the career numbers, Sam Frock 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.