Jim Peterson vs. Derek Wallace — Career Comparison

Looking at the career totals, Jim Peterson and Derek Wallace are fairly close on the surface numbers. Jim Peterson posted stronger numbers in WHIP (1.665 vs 1.727) and home runs allowed (0.74 per nine innings vs 1.09). Derek Wallace had the advantage in ERA (3.82 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.