Juan Guzman vs. Jackson Kowar — Career Comparison

Juan Guzman built a career as a starting pitcher and Jackson Kowar as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Juan Guzman posted stronger surface numbers — ERA 4.08 and WHIP 1.381 compared to 8.21 and 1.934 for Jackson Kowar. By the career numbers, Juan Guzman had the better of this cross-role comparison — though era context would sharpen the verdict.