Bob O'Brien vs. Walter Zink — Career Comparison

Bob O'Brien built a career as a starting pitcher and Walter Zink as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Walter Zink posted stronger surface numbers — ERA 2.25 and WHIP 1.750 compared to 3 and 1.333 for Bob O'Brien. By the career numbers, Walter Zink had the better of this cross-role comparison — though era context would sharpen the verdict.