Jack Leiter vs. Mike Mattimore — Career Comparison

Jack Leiter built a career as a starting pitcher and Mike Mattimore as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mike Mattimore posted stronger surface numbers — ERA 3.83 and WHIP 1.423 compared to 4.8 and 1.361 for Jack Leiter. By the career numbers, Mike Mattimore had the better of this cross-role comparison — though era context would sharpen the verdict.