John Anderson vs. Grant Roberts — Career Comparison

On the career pitching numbers, Grant Roberts posted a stronger line than John Anderson. Grant Roberts posted stronger numbers in ERA (4.25 vs 6.45) and WHIP (1.515 vs 1.813). By the career numbers, Grant Roberts 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.