Dave Haas vs. Trevor Williams — Career Comparison

On the career pitching numbers, Trevor Williams posted a stronger line than Dave Haas. Trevor Williams posted stronger numbers in ERA (4.46 vs 4.84) and WHIP (1.388 vs 1.654). By the career numbers, Trevor Williams 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.