Dave Heaverlo vs. The Only Nolan — Career Comparison

On the career pitching numbers, The Only Nolan posted a stronger line than Dave Heaverlo. The Only Nolan posted stronger numbers in ERA (2.98 vs 3.41) and WHIP (1.265 vs 1.492). By the career numbers, The Only Nolan 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.