Lance Cormier vs. Michael Petersen — Career Comparison

Looking at the career totals, Lance Cormier and Michael Petersen are fairly close on the surface numbers. Michael Petersen had the edge in WHIP (1.593 vs 1.683). By the career numbers, Michael Petersen 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.