John Firth vs. Kenny Rosenberg — Career Comparison

Kenny Rosenberg built a career as a starting pitcher and John Firth as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Kenny Rosenberg posted stronger surface numbers — ERA 4.66 and WHIP 1.507 compared to 8 and 2.111 for John Firth. By the career numbers, Kenny Rosenberg had the better of this cross-role comparison — though era context would sharpen the verdict.