Dave Heaverlo vs. Jack Leathersich — Career Comparison

Looking at the career totals, Dave Heaverlo and Jack Leathersich are fairly close on the surface numbers. Jack Leathersich posted stronger numbers in ERA (2.7 vs 3.41) and home runs allowed (0 per nine innings vs 0.69). Dave Heaverlo had the advantage in WHIP (1.492 vs 1.740). By the career numbers, Jack Leathersich 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.