Dave Heaverlo vs. Mike Joyce — Career Comparison

Looking at the career totals, Dave Heaverlo and Mike Joyce are fairly close on the surface numbers. Dave Heaverlo had the edge in ERA (3.41 vs 4.33). 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.