Mordecai Brown vs Jack Chesbro: Career Stats Comparison
Mordecai Brown (1903–1916) and Jack Chesbro (1899–1909) — breaking in during the 1900s and the 1890s respectively, so they pitched against very different hitting environments. Mordecai Brown compiled 239 wins and 1,375 strikeouts; Jack Chesbro put up 198 wins and 1,265 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Mordecai Brown
Jack Chesbro
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 | Mordecai Brown | Jack Chesbro |
|---|---|---|
| Wins | 239 | 198 |
| Losses | 130 | 132 |
| Games | 481 | 392 |
| Games Started | 332 | 332 |
| Complete Games | 271 | 260 |
| Shutouts | 55 | 35 |
| Saves | 49 | 5 |
| Strikeouts | 1,375 | 1,265 |
| Walks | 673 | 690 |
| Hits Allowed | 2,708 | 2,647 |
| Home Runs Allowed | 43 | 39 |
| Innings Pitched | 3,172 | 2,896 |
| ERA | 2.06 | 2.68 |
| WHIP | 1.07 | 1.15 |
| K/9 | 3.90 | 3.93 |
| BB/9 | 1.91 | 2.14 |
PIV Comparison
By PIV (Player Impact Value), Mordecai Brown outpaces Jack Chesbro 31,501 to 22,639 — a gap driven primarily by per-season impact (2,100 vs 1,887 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).
Mordecai Brown — top 3 seasons by ERA (lower is better)
Jack Chesbro — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Mordecai Brown leads in wins, strikeouts, ERA, and WHIP, while Jack Chesbro owns K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Mordecai Brown. PIV agrees: Mordecai Brown grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.