Tom Knowlson vs. B. J. Rosenberg — Career Comparison

Tom Knowlson built a career as a starting pitcher and B. J. Rosenberg as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Tom Knowlson posted stronger surface numbers — ERA 3.49 and WHIP 1.579 compared to 5.72 and 1.571 for B. J. Rosenberg. By the career numbers, Tom Knowlson had the better of this cross-role comparison — though era context would sharpen the verdict.