Aroldis Chapman vs David Robertson: Career Stats Comparison
Aroldis Chapman (2010–present) and David Robertson (2008–present) — breaking in during the 2010s and the 2000s respectively, so they pitched against very different hitting environments. Aroldis Chapman compiled 60 wins and 1,331 strikeouts; David Robertson put up 68 wins and 1,176 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Aroldis Chapman
David Robertson
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 | Aroldis Chapman | David Robertson |
|---|---|---|
| Wins | 60 | 68 |
| Losses | 48 | 46 |
| Games | 863 | 881 |
| Games Started | 0 | 1 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | 367 | 179 |
| Strikeouts | 1,331 | 1,176 |
| Walks | 408 | 365 |
| Hits Allowed | 475 | 674 |
| Home Runs Allowed | 54 | 81 |
| Innings Pitched | 821 | 894 |
| ERA | 2.52 | 2.93 |
| WHIP | 1.08 | 1.16 |
| K/9 | 14.58 | 11.83 |
| BB/9 | 4.47 | 3.67 |
PIV Comparison
By PIV (Player Impact Value), Aroldis Chapman outpaces David Robertson 36,308 to 25,283 — a gap driven primarily by per-season impact (2,017 vs 1,264 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).
Aroldis Chapman — top 0 seasons by ERA (lower is better)
David Robertson — top 0 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Aroldis Chapman leads in strikeouts, ERA, WHIP, and K/9, while David Robertson owns wins and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Aroldis Chapman. PIV agrees: Aroldis Chapman grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.