Rafael Betancourt vs. Bill Knowlton — Career Comparison

Bill Knowlton built a career as a starting pitcher and Rafael Betancourt as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Rafael Betancourt posted stronger surface numbers — ERA 3.36 and WHIP 1.167 compared to 4.76 and 2.118 for Bill Knowlton. By the career numbers, Rafael Betancourt had the better of this cross-role comparison — though era context would sharpen the verdict.