Zack Spencer vs. Bruce Sutter — Career Comparison

Zack Spencer built a career as a starting pitcher and Bruce Sutter as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Bruce Sutter posted stronger surface numbers — ERA 2.83 and WHIP 1.220 compared to 7.04 and 1.565 for Zack Spencer. By the career numbers, Bruce Sutter had the better of this cross-role comparison — though era context would sharpen the verdict.