Jhonathan Diaz vs. B. J. Ryan — Career Comparison

Jhonathan Diaz built a career as a starting pitcher and B. J. Ryan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. B. J. Ryan posted stronger surface numbers — ERA 3.37 and WHIP 1.332 compared to 4.66 and 1.705 for Jhonathan Diaz. By the career numbers, B. J. Ryan had the better of this cross-role comparison — though era context would sharpen the verdict.