Bob Miller vs. Michael Roth — Career Comparison

On the career pitching numbers, Bob Miller posted a stronger line than Michael Roth. Bob Miller posted stronger numbers in ERA (4.72 vs 8.5) and WHIP (1.595 vs 1.889). By the career numbers, Bob Miller 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.