Kohei Arihara vs. George O'Donnell — Career Comparison

On the career pitching numbers, George O'Donnell posted a stronger line than Kohei Arihara. George O'Donnell posted stronger numbers in ERA (4.53 vs 7.57) and WHIP (1.443 vs 1.731). By the career numbers, George O'Donnell 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.