Aroldis Chapman vs David Robertson: Career Stats Comparison
Aroldis Chapman and David Robertson are close to even, splitting the 10 statistical categories compared on this page 5–5. Aroldis Chapman has played 2010–present as a pitcher; David Robertson has played 2008–present as a pitcher.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
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.
Quick answer
- Who had the better ERA? Aroldis Chapman, with 2.52 to David Robertson's 2.93.
- Who won more games? David Robertson, with 68 to Aroldis Chapman's 60.
- Who recorded more strikeouts? Aroldis Chapman, with 1,331 to David Robertson's 1,176.
- Who had the better WHIP? Aroldis Chapman, with 1.08 to David Robertson's 1.16.
- Who pitched more innings? David Robertson, with 894 to Aroldis Chapman's 821.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Aroldis Chapman, with 36,308 career Pitcher PIV to David Robertson's 25,283.
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. Lower ERA, WHIP and BB/9 lead; higher K/9 leads. Totals where fewer is not an achievement -- losses, walks and hits allowed -- are left unmarked, because they track how long someone pitched rather than how well. Rate stats are not era-adjusted: compare them with the era in mind, or use the PIV card below, which is.
| Statistic | Aroldis Chapman | David Robertson |
|---|---|---|
| Wins | 60 | Leads: 68 |
| Losses | 48 | 46 |
| Games | 863 | Leads: 881 |
| Games Started | 0 | Leads: 1 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | Leads: 367 | 179 |
| Strikeouts | Leads: 1,331 | 1,176 |
| Walks | 408 | 365 |
| Hits Allowed | 475 | 674 |
| Home Runs Allowed | 54 | 81 |
| Innings Pitched | 821 | Leads: 894 |
| ERA | Leads: 2.52 | 2.93 |
| WHIP | Leads: 1.08 | 1.16 |
| K/9 | Leads: 14.58 | 11.83 |
| BB/9 | 4.47 | Leads: 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
No seasons meet the qualifying workload, so there is no peak-season list to show.
David Robertson
No seasons meet the qualifying workload, so there is no peak-season list to show.
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.
Related Matchups
Aroldis Chapman vs David Robertson: Frequently Asked Questions
- Who had the better ERA?
- Aroldis Chapman, with 2.52 to David Robertson's 2.93.
- Who won more games?
- David Robertson, with 68 to Aroldis Chapman's 60.
- Who recorded more strikeouts?
- Aroldis Chapman, with 1,331 to David Robertson's 1,176.
- Who had the better WHIP?
- Aroldis Chapman, with 1.08 to David Robertson's 1.16.