Nate Robertson vs. Lawrence Simpson — Career Comparison

On the career pitching numbers, Lawrence Simpson posted a stronger line than Nate Robertson. Lawrence Simpson posted stronger numbers in ERA (4.3 vs 5.01) and WHIP (1.398 vs 1.493). By the career numbers, Lawrence Simpson 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.