Sandy Koufax vs Warren Spahn: Career Stats Comparison
Warren Spahn 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). Sandy Koufax played 1955–1966 as a pitcher; Warren Spahn played 1942–1965 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
Sandy Koufax (1955–1966) and Warren Spahn (1942–1965) — breaking in during the 1950s and the 1940s respectively, so they pitched against very different hitting environments. Sandy Koufax finished with 165 wins and 2,396 strikeouts; Warren Spahn finished with 363 wins and 2,583 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Sandy Koufax, with 2.76 to Warren Spahn's 3.09.
- Who won more games? Warren Spahn, with 363 to Sandy Koufax's 165.
- Who recorded more strikeouts? Warren Spahn, with 2,583 to Sandy Koufax's 2,396.
- Who had the better WHIP? Sandy Koufax, with 1.11 to Warren Spahn's 1.19.
- Who pitched more innings? Warren Spahn, with 5,243.2 to Sandy Koufax's 2,324.1.
- Who threw more shutouts? Warren Spahn, with 63 to Sandy Koufax's 40.
- Who has the higher career Pitcher PIV? Warren Spahn, with 63,558 career Pitcher PIV to Sandy Koufax's 63,020.
Sandy Koufax
Warren Spahn
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 1950s and the 1940s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Sandy Koufax | Warren Spahn |
|---|---|---|
| Wins | 165 | Leads: 363 |
| Losses not scored | 87 | 245 |
| Games | 397 | Leads: 750 |
| Games Started | 314 | Leads: 665 |
| Complete Games | 137 | Leads: 382 |
| Shutouts | 40 | Leads: 63 |
| Saves | 9 | Leads: 29 |
| Strikeouts | 2,396 | Leads: 2,583 |
| Walks not scored | 817 | 1,434 |
| Hits Allowed not scored | 1,754 | 4,830 |
| Home Runs Allowed not scored | 204 | 434 |
| Innings Pitched | 2,324.1 | Leads: 5,243.2 |
| ERA | Leads: 2.76 | 3.09 |
| WHIP | Leads: 1.11 | 1.19 |
| K/9 | Leads: 9.28 | 4.43 |
| BB/9 | 3.16 | Leads: 2.46 |
PIV Comparison through 2025
By PIV (Player Impact Value), Warren Spahn edges Sandy Koufax 63,558 to 63,020 — a longevity gap rather than a per-season one: Warren Spahn played 22 seasons to Sandy Koufax's 12, while Sandy Koufax carries the higher per-season figure (5,252 to 2,889). 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).
Sandy Koufax — top 3 seasons by ERA (lower is better)
Warren Spahn — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Warren Spahn leads in wins, strikeouts, and innings pitched, while Sandy Koufax owns ERA, WHIP, and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Warren Spahn. PIV agrees: Warren Spahn grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Sandy Koufax and Warren Spahn careers compare
From 1955 through 1965, Sandy Koufax and Warren Spahn were in the majors together. The table compares 397 games of Sandy Koufax with 750 of Warren Spahn across 12 and 22 PIV seasons; totals favor the longer career by default. The green cells for Sandy Koufax are ERA (2.76 to 3.09), WHIP (1.11 to 1.19), and strikeouts per nine (9.28 to 4.43). By rate, Sandy Koufax struck out 9.28 and walked 3.16 per nine innings; Warren Spahn struck out 4.43 and walked 2.46. Both had the same role: Sandy Koufax was mainly a starter (314 starts in 397 games); Warren Spahn was mainly a starter (665 starts in 750 games).
Sandy Koufax vs Warren Spahn: Frequently Asked Questions
- Who was better, Sandy Koufax or Warren Spahn?
- By the career statistics compared on this page, Warren Spahn leads Sandy Koufax in 9 of the 12 scored categories.
- Who had the better ERA?
- Sandy Koufax, with 2.76 to Warren Spahn's 3.09.
- Who won more games?
- Warren Spahn, with 363 to Sandy Koufax's 165.
- Who recorded more strikeouts?
- Warren Spahn, with 2,583 to Sandy Koufax's 2,396.
- Who had the better WHIP?
- Sandy Koufax, with 1.11 to Warren Spahn's 1.19.