Jacob deGrom vs Roy Halladay: Career Stats Comparison
Roy Halladay has the better career line of the two, leading 9 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Jacob deGrom has played 2014–present as a pitcher; Roy Halladay played 1998–2013 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
Jacob deGrom (2014–present) and Roy Halladay (1998–2013) — breaking in during the 2010s and the 1990s respectively, so they pitched against very different hitting environments. Jacob deGrom has 107 wins and 2,052 strikeouts through October 12, 2026; Roy Halladay finished with 203 wins and 2,117 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Jacob deGrom, with 2.73 to Roy Halladay's 3.38.
- Who won more games? Roy Halladay, with 203 to Jacob deGrom's 107.
- Who recorded more strikeouts? Roy Halladay, with 2,117 to Jacob deGrom's 2,052.
- Who had the better WHIP? Jacob deGrom, with 1.00 to Roy Halladay's 1.18.
- Who pitched more innings? Roy Halladay, with 2,749.1 to Jacob deGrom's 1,702.1.
- Who threw more shutouts? Roy Halladay, with 20 to Jacob deGrom's 2.
- Who has the higher career Pitcher PIV? Roy Halladay, with 66,478 career Pitcher PIV to Jacob deGrom's 58,656.
Jacob deGrom
Roy Halladay
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. 12 of the 16 lines below are scored; the other 4 are counting totals on which fewer is not an achievement, so no one is awarded them. 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, and the 2010s and the 1990s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Jacob deGrom is still active — his totals below are current through October 12, 2026.
| Statistic | Jacob deGrom | Roy Halladay |
|---|---|---|
| Wins | 107 | Leads: 203 |
| Losses not scored | 76 | 105 |
| Games | 279 | Leads: 416 |
| Games Started | 279 | Leads: 390 |
| Complete Games | 4 | Leads: 67 |
| Shutouts | 2 | Leads: 20 |
| Saves | 0 | Leads: 1 |
| Strikeouts | 2,052 | Leads: 2,117 |
| Walks not scored | 391 | 592 |
| Hits Allowed not scored | 1,312 | 2,646 |
| Home Runs Allowed not scored | 166 | 236 |
| Innings Pitched | 1,702.1 | Leads: 2,749.1 |
| ERA | Leads: 2.73 | 3.38 |
| WHIP | Leads: 1.00 | 1.18 |
| K/9 | Leads: 10.85 | 6.93 |
| BB/9 | 2.07 | Leads: 1.94 |
PIV Comparison through 2025
By PIV (Player Impact Value), Roy Halladay leads Jacob deGrom 66,478 to 58,656 — a longevity gap rather than a per-season one: Roy Halladay played 16 seasons to Jacob deGrom's 12, while Jacob deGrom carries the higher per-season figure (4,888 to 4,155). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
PIV is computed through the 2025 season. The career totals on this page include 2026 to date, so PIV does not yet reflect the 2026 season.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Jacob deGrom — top 3 seasons by ERA (lower is better)
Roy Halladay — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Roy Halladay leads in wins, strikeouts, and innings pitched, while Jacob deGrom owns ERA, WHIP, and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Roy Halladay. PIV agrees: Roy Halladay grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Jacob deGrom and Roy Halladay careers compare
No season is shared: Roy Halladay played 1998–2013, Jacob deGrom 2014–present. The two careers are close in length, 279 games for Jacob deGrom and 416 for Roy Halladay across 12 and 16 PIV seasons, so the totals compare on fairly even terms. Where Jacob deGrom comes out ahead, it is in ERA (2.73 to 3.38), WHIP (1.00 to 1.18), and strikeouts per nine (10.85 to 6.93). By rate, Jacob deGrom struck out 10.85 and walked 2.07 per nine innings; Roy Halladay struck out 6.93 and walked 1.94. Jacob deGrom was mainly a starter (279 starts in 279 games), and Roy Halladay was mainly a starter (390 starts in 416 games). Because Jacob deGrom is still playing, the totals above will keep moving through the season.
Jacob deGrom vs Roy Halladay: Frequently Asked Questions
- Who was better, Jacob deGrom or Roy Halladay?
- By the career statistics compared on this page, Roy Halladay leads Jacob deGrom in 9 of the 12 scored categories.
- Who had the better ERA?
- Jacob deGrom, with 2.73 to Roy Halladay's 3.38.
- Who won more games?
- Roy Halladay, with 203 to Jacob deGrom's 107.
- Who recorded more strikeouts?
- Roy Halladay, with 2,117 to Jacob deGrom's 2,052.
- Who had the better WHIP?
- Jacob deGrom, with 1.00 to Roy Halladay's 1.18.