Gregg Olson vs. Basilio Rosell — Career Comparison

Basilio Rosell built a career as a starting pitcher and Gregg Olson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Gregg Olson posted stronger surface numbers — ERA 3.46 and WHIP 1.442 compared to 4.64 and 1.436 for Basilio Rosell. By the career numbers, Gregg Olson had the better of this cross-role comparison — though era context would sharpen the verdict.