Darrell Jackson vs. Tom Knowlson — Career Comparison

Looking at the career totals, Darrell Jackson and Tom Knowlson are fairly close on the surface numbers. Tom Knowlson posted stronger numbers in ERA (3.49 vs 4.38) and home runs allowed (0.09 per nine innings vs 0.79). Darrell Jackson had the advantage in WHIP (1.506 vs 1.579). By the career numbers, Tom Knowlson 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.