Zach Jackson vs. Drew Smyly — Career Comparison

Looking at the career totals, Zach Jackson and Drew Smyly are fairly close on the surface numbers. Drew Smyly posted stronger numbers in ERA (4.2 vs 5.81) and WHIP (1.303 vs 1.566). Zach Jackson had the advantage in home runs allowed (1.28 per nine innings vs 1.49). By the career numbers, Drew Smyly 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.