John Greenig vs. Randy Niemann — Career Comparison

On the career pitching numbers, Randy Niemann posted a stronger line than John Greenig. Randy Niemann posted stronger numbers in ERA (4.64 vs 11) and WHIP (1.565 vs 2.333). By the career numbers, Randy Niemann 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.