Andrew Alvarez vs. Marty Bystrom — Career Comparison

On the career pitching numbers, Andrew Alvarez posted a stronger line than Marty Bystrom. Andrew Alvarez posted stronger numbers in ERA (2.31 vs 4.26) and WHIP (1.114 vs 1.428). By the career numbers, Andrew Alvarez 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.