David Hernandez vs. Mike O'Neill — Career Comparison

Mike O'Neill built a career as a starting pitcher and David Hernandez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mike O'Neill posted stronger surface numbers — ERA 2.73 and WHIP 1.308 compared to 4.12 and 1.335 for David Hernandez. By the career numbers, Mike O'Neill had the better of this cross-role comparison — though era context would sharpen the verdict.