Ronald Bolanos vs. Jack Kull — Career Comparison

Ronald Bolanos built a career as a starting pitcher and Jack Kull as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jack Kull posted stronger surface numbers — ERA 3 and WHIP 2.667 compared to 5.25 and 1.646 for Ronald Bolanos. By the career numbers, Jack Kull had the better of this cross-role comparison — though era context would sharpen the verdict.