Mark Grater vs. Lee Guetterman — Career Comparison

Looking at the career totals, Mark Grater and Lee Guetterman are fairly close on the surface numbers. Mark Grater posted stronger numbers in ERA (3.38 vs 4.33) and home runs allowed (0 per nine innings vs 0.71). Lee Guetterman had the advantage in WHIP (1.489 vs 2.250). By the career numbers, Mark Grater 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.