Roger Clemens vs George Kirby: Career Stats Comparison
Roger Clemens (1984–2007) and George Kirby (2022–present) — breaking in during the 1980s and the 2020s respectively, so they pitched against very different hitting environments. Roger Clemens compiled 354 wins and 4,672 strikeouts; George Kirby put up 45 wins and 621 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Roger Clemens
George Kirby
Career Stats Side-by-Side
Every cell below is a career total or career rate. Cells highlighted in green mark the player who leads that line. For pitchers, lower ERA, WHIP, and BB/9 lead; higher K/9 leads.
| Statistic | Roger Clemens | George Kirby |
|---|---|---|
| Wins | 354 | 45 |
| Losses | 184 | 34 |
| Games | 709 | 112 |
| Games Started | 707 | 112 |
| Complete Games | 118 | 1 |
| Shutouts | 46 | 0 |
| Saves | 0 | 0 |
| Strikeouts | 4,672 | 621 |
| Walks | 1,580 | 93 |
| Hits Allowed | 4,185 | 616 |
| Home Runs Allowed | 363 | 72 |
| Innings Pitched | 4,916 | 637 |
| ERA | 3.12 | 3.58 |
| WHIP | 1.17 | 1.11 |
| K/9 | 8.55 | 8.76 |
| BB/9 | 2.89 | 1.31 |
PIV Comparison
By PIV (Player Impact Value), Roger Clemens outpaces George Kirby 146,187 to 14,778 — a gap driven primarily by per-season impact (6,091 vs 3,695 per year). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Roger Clemens — top 3 seasons by ERA (lower is better)
George Kirby — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Roger Clemens leads in wins, strikeouts, ERA, and innings pitched, while George Kirby owns WHIP and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Roger Clemens. PIV agrees: Roger Clemens grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.