Jose Diaz vs. Bob Miller — Career Comparison

On the career pitching numbers, Bob Miller posted a stronger line than Jose Diaz. Bob Miller posted stronger numbers in ERA (4.29 vs 9.39) and WHIP (1.429 vs 2.609). 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.