Willie Hernandez vs. Yoshinobu Yamamoto — Career Comparison

Yoshinobu Yamamoto built a career as a starting pitcher and Willie Hernandez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Yoshinobu Yamamoto posted stronger surface numbers — ERA 2.66 and WHIP 1.032 compared to 3.38 and 1.321 for Willie Hernandez. By the career numbers, Yoshinobu Yamamoto had the better of this cross-role comparison — though era context would sharpen the verdict.