John Johnstone vs. Colin Selby — Career Comparison

On the career pitching numbers, John Johnstone posted a stronger line than Colin Selby. John Johnstone posted stronger numbers in ERA (4.01 vs 6.2) and WHIP (1.455 vs 1.556). By the career numbers, John Johnstone 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.