M. Johnson vs. Shun Yamaguchi — Career Comparison

M. Johnson built a career as a starting pitcher and Shun Yamaguchi as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Shun Yamaguchi posted stronger surface numbers — ERA 8.06 and WHIP 1.753 compared to 18 and 3.333 for M. Johnson. By the career numbers, Shun Yamaguchi had the better of this cross-role comparison — though era context would sharpen the verdict.