Dave Righetti vs. Grant Roberts — Career Comparison

On the career pitching numbers, Dave Righetti posted a stronger line than Grant Roberts. Dave Righetti posted stronger numbers in ERA (3.46 vs 4.25) and WHIP (1.372 vs 1.515). By the career numbers, Dave Righetti 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.