Eric Hacker vs. Jim Peterson — Career Comparison

Looking at the career totals, Eric Hacker and Jim Peterson are fairly close on the surface numbers. Jim Peterson posted stronger numbers in WHIP (1.665 vs 1.722) and home runs allowed (0.74 per nine innings vs 1). Eric Hacker had the advantage in ERA (4 vs 5.27). By the career numbers, Jim Peterson 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.