Dave Heaverlo vs. Unknown Thurston — Career Comparison

On the career pitching numbers, Unknown Thurston posted a stronger line than Dave Heaverlo. Unknown Thurston posted stronger numbers in ERA (1.74 vs 3.41) and WHIP (1.161 vs 1.492). By the career numbers, Unknown Thurston 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.