Dave Heaverlo vs. Les Willis — Career Comparison

Looking at the career totals, Dave Heaverlo and Les Willis are fairly close on the surface numbers. Dave Heaverlo had the edge in WHIP (1.492 vs 1.864). By the career numbers, Dave Heaverlo 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.