Rick Anderson vs. Dave Roberts — Career Comparison

On the career pitching numbers, Dave Roberts posted a stronger line than Rick Anderson. Dave Roberts posted stronger numbers in ERA (3.78 vs 4.75) and WHIP (1.374 vs 1.521). By the career numbers, Dave 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.