Donald Jarmon vs. John Singleton — Career Comparison

On the career pitching numbers, John Singleton posted a stronger line than Donald Jarmon. John Singleton posted stronger numbers in ERA (5.9 vs 11.37) and WHIP (1.774 vs 1.974). By the career numbers, John Singleton 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.