Michael Petersen vs. Taylor Rogers — Career Comparison

On the career pitching numbers, Taylor Rogers posted a stronger line than Michael Petersen. Taylor Rogers posted stronger numbers in ERA (3.34 vs 5.02) and WHIP (1.236 vs 1.593). By the career numbers, Taylor Rogers 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.