Kris Foster vs. Mark Kiefer — Career Comparison

Looking at the career totals, Kris Foster and Mark Kiefer are fairly close on the surface numbers. Kris Foster posted stronger numbers in ERA (2.7 vs 4.29) and home runs allowed (0.9 per nine innings vs 1.24). Mark Kiefer had the advantage in WHIP (1.481 vs 1.700). By the career numbers, Kris Foster 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.