Jair Jurrjens vs. Don Kaiser — Career Comparison

On the career pitching numbers, Jair Jurrjens posted a stronger line than Don Kaiser. Jair Jurrjens posted stronger numbers in ERA (3.72 vs 4.15) and WHIP (1.362 vs 1.458). By the career numbers, Jair Jurrjens 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.