Lefty Grove vs Roy Halladay: Career Stats Comparison
Lefty Grove 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). Lefty Grove played 1925–1941 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
Lefty Grove (1925–1941) and Roy Halladay (1998–2013) — breaking in during the 1920s and the 1990s respectively, so they pitched against very different hitting environments. Lefty Grove finished with 300 wins and 2,266 strikeouts; 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? Lefty Grove, with 3.06 to Roy Halladay's 3.38.
- Who won more games? Lefty Grove, with 300 to Roy Halladay's 203.
- Who recorded more strikeouts? Lefty Grove, with 2,266 to Roy Halladay's 2,117.
- Who had the better WHIP? Roy Halladay, with 1.18 to Lefty Grove's 1.28.
- Who pitched more innings? Lefty Grove, with 3,940.2 to Roy Halladay's 2,749.1.
- Who threw more shutouts? Lefty Grove, with 35 to Roy Halladay's 20.
- Who has the higher career Pitcher PIV? Lefty Grove, with 81,321 career Pitcher PIV to Roy Halladay's 66,478.
Lefty Grove
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 1920s and the 1990s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Lefty Grove | Roy Halladay |
|---|---|---|
| Wins | Leads: 300 | 203 |
| Losses not scored | 141 | 105 |
| Games | Leads: 616 | 416 |
| Games Started | Leads: 457 | 390 |
| Complete Games | Leads: 298 | 67 |
| Shutouts | Leads: 35 | 20 |
| Saves | Leads: 55 | 1 |
| Strikeouts | Leads: 2,266 | 2,117 |
| Walks not scored | 1,187 | 592 |
| Hits Allowed not scored | 3,849 | 2,646 |
| Home Runs Allowed not scored | 162 | 236 |
| Innings Pitched | Leads: 3,940.2 | 2,749.1 |
| ERA | Leads: 3.06 | 3.38 |
| WHIP | 1.28 | Leads: 1.18 |
| K/9 | 5.18 | Leads: 6.93 |
| BB/9 | 2.71 | Leads: 1.94 |
PIV Comparison through 2025
By PIV (Player Impact Value), Lefty Grove leads Roy Halladay 81,321 to 66,478 — driven by both sides of the ledger: 4,784 PIV per season to 4,155, across 17 seasons to 16. 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).
Lefty Grove — 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, Lefty Grove leads in wins, strikeouts, ERA, and innings pitched, while Roy Halladay owns WHIP and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Lefty Grove. PIV agrees: Lefty Grove grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Lefty Grove and Roy Halladay careers compare
Lefty Grove (1925–1941) was finished before Roy Halladay (1998–2013) arrived, so they never shared a league. With 616 games against 416 across 17 and 16 PIV seasons, neither player's totals owe much to extra seasons. Where Roy Halladay comes out ahead, it is in WHIP (1.18 to 1.28), strikeouts per nine (6.93 to 5.18), and walks per nine (1.94 to 2.71). The per-nine rows read 5.18 strikeouts and 2.71 walks for Lefty Grove, 6.93 and 1.94 for Roy Halladay. Lefty Grove was mainly a starter (457 starts in 616 games), and Roy Halladay was mainly a starter (390 starts in 416 games).
Lefty Grove vs Roy Halladay: Frequently Asked Questions
- Who was better, Lefty Grove or Roy Halladay?
- By the career statistics compared on this page, Lefty Grove leads Roy Halladay in 9 of the 12 scored categories.
- Who had the better ERA?
- Lefty Grove, with 3.06 to Roy Halladay's 3.38.
- Who won more games?
- Lefty Grove, with 300 to Roy Halladay's 203.
- Who recorded more strikeouts?
- Lefty Grove, with 2,266 to Roy Halladay's 2,117.
- Who had the better WHIP?
- Roy Halladay, with 1.18 to Lefty Grove's 1.28.