Darold Knowles vs. Thyago Vieira — Career Comparison

On the career pitching numbers, Darold Knowles posted a stronger line than Thyago Vieira. Darold Knowles posted stronger numbers in ERA (3.12 vs 5.81) and WHIP (1.439 vs 1.665). By the career numbers, Darold Knowles 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.