Casey Janssen vs. Masanori Murakami — Career Comparison

On the career pitching numbers, Masanori Murakami posted a stronger line than Casey Janssen. Masanori Murakami posted stronger numbers in ERA (3.43 vs 3.63) and WHIP (1.041 vs 1.238). By the career numbers, Masanori Murakami 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.