Jake Arrieta vs. Unknown Brown — Career Comparison

On the career pitching numbers, Jake Arrieta posted a stronger line than Unknown Brown. Jake Arrieta posted stronger numbers in ERA (3.98 vs 4.91) and WHIP (1.268 vs 1.636). By the career numbers, Jake Arrieta 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.