Roberto Duran vs. Connie Marrero — Career Comparison

Connie Marrero 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. Connie Marrero posted stronger surface numbers — ERA 3.67 and WHIP 1.340 compared to 6.58 and 1.846 for Roberto Duran. By the career numbers, Connie Marrero had the better of this cross-role comparison — though era context would sharpen the verdict.