Nate Robertson vs. Grant Thatcher — Career Comparison

Nate Robertson built a career as a starting pitcher and Grant Thatcher as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Grant Thatcher posted stronger surface numbers — ERA 3.16 and WHIP 1.378 compared to 5.01 and 1.493 for Nate Robertson. By the career numbers, Grant Thatcher had the better of this cross-role comparison — though era context would sharpen the verdict.