Jhonathan Diaz vs. Harley Parker — Career Comparison

Jhonathan Diaz built a career as a starting pitcher and Harley Parker as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jhonathan Diaz posted stronger surface numbers — ERA 4.66 and WHIP 1.705 compared to 5.9 and 1.749 for Harley Parker. By the career numbers, Jhonathan Diaz had the better of this cross-role comparison — though era context would sharpen the verdict.