John Duffie vs. Don Ferrarese — Career Comparison

Looking at the career totals, John Duffie and Don Ferrarese are fairly close on the surface numbers. Don Ferrarese posted stronger numbers in WHIP (1.494 vs 1.655) and home runs allowed (0.69 per nine innings vs 0.93). John Duffie had the advantage in ERA (2.79 vs 4). By the career numbers, Don Ferrarese 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.