Roberto Duran vs. Williams Perez — Career Comparison

Williams Perez built a career as a starting pitcher and Roberto Duran as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Williams Perez posted stronger surface numbers — ERA 5.18 and WHIP 1.515 compared to 6.58 and 1.846 for Roberto Duran. By the career numbers, Williams Perez had the better of this cross-role comparison — though era context would sharpen the verdict.