Dan Perkins vs. Ed Zmich — Career Comparison

On the career pitching numbers, Ed Zmich posted a stronger line than Dan Perkins. Ed Zmich posted stronger numbers in ERA (5.18 vs 6.54) and WHIP (1.705 vs 1.846). By the career numbers, Ed Zmich 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.