Jose Diaz vs. C. V. Matteson — Career Comparison

On the career pitching numbers, C. V. Matteson posted a stronger line than Jose Diaz. C. V. Matteson posted stronger numbers in ERA (9 vs 9.39) and WHIP (2.000 vs 2.609). By the career numbers, C. V. Matteson 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.