Seth Johnson vs. Si Simmons — Career Comparison

On the career pitching numbers, Si Simmons posted a stronger line than Seth Johnson. Si Simmons posted stronger numbers in ERA (5.4 vs 9) and WHIP (1.500 vs 1.733). By the career numbers, Si Simmons 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.