Willie Foster vs Sandy Koufax: Career Stats Comparison
Sandy Koufax has the better career line of the two, leading 8 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Willie Foster played ?–1937 as a pitcher; Sandy Koufax played 1955–1966 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
Willie Foster (?–1937) and Sandy Koufax (1955–1966) — they pitched in different contexts, so adjusted stats matter. Willie Foster finished with 125 wins and 1,062 strikeouts; Sandy Koufax finished with 165 wins and 2,396 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Willie Foster, with 2.66 to Sandy Koufax's 2.76.
- Who won more games? Sandy Koufax, with 165 to Willie Foster's 125.
- Who recorded more strikeouts? Sandy Koufax, with 2,396 to Willie Foster's 1,062.
- Who had the better WHIP? Sandy Koufax, with 1.11 to Willie Foster's 1.15.
- Who pitched more innings? Sandy Koufax, with 2,324.1 to Willie Foster's 1,665.0.
- Who threw more shutouts? Sandy Koufax, with 40 to Willie Foster's 34.
- Who has the higher career Pitcher PIV? Sandy Koufax, with 63,020 career Pitcher PIV to Willie Foster's 41,672.
Willie Foster
Sandy Koufax
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, so read them against the run environment each player worked in, or use the PIV card below, which is adjusted.
| Statistic | Willie Foster | Sandy Koufax |
|---|---|---|
| Wins | 125 | Leads: 165 |
| Losses not scored | 60 | 87 |
| Games | 262 | Leads: 397 |
| Games Started | 185 | Leads: 314 |
| Complete Games | Leads: 142 | 137 |
| Shutouts | 34 | Leads: 40 |
| Saves | Leads: 14 | 9 |
| Strikeouts | 1,062 | Leads: 2,396 |
| Walks not scored | 522 | 817 |
| Hits Allowed not scored | 1,397 | 1,754 |
| Home Runs Allowed not scored | 41 | 204 |
| Innings Pitched | 1,665.0 | Leads: 2,324.1 |
| ERA | Leads: 2.66 | 2.76 |
| WHIP | 1.15 | Leads: 1.11 |
| K/9 | 5.74 | Leads: 9.28 |
| BB/9 | Leads: 2.82 | 3.16 |
PIV Comparison through 2025
By PIV (Player Impact Value), Sandy Koufax outpaces Willie Foster 63,020 to 41,672 — driven by per-season impact — 5,252 PIV per season to 2,193 — rather than by longevity, since Sandy Koufax played 12 seasons to Willie Foster's 19. 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).
Willie Foster — top 3 seasons by ERA (lower is better)
Sandy Koufax — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Sandy Koufax leads in wins, strikeouts, WHIP, and K/9, while Willie Foster owns ERA. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Sandy Koufax. PIV agrees: Sandy Koufax grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Willie Foster and Sandy Koufax careers compare
No season is shared: Willie Foster played ?–1937, Sandy Koufax 1955–1966. Playing time explains much of the gap in the counting rows: Willie Foster appeared in 262 games to Sandy Koufax's 397. Where Willie Foster comes out ahead, it is in complete games (142 to 137), saves (14 to 9), and ERA (2.66 to 2.76). By rate, Willie Foster struck out 5.74 and walked 2.82 per nine innings; Sandy Koufax struck out 9.28 and walked 3.16. Both had the same role: Willie Foster was mainly a starter (185 starts in 262 games); Sandy Koufax was mainly a starter (314 starts in 397 games). In WHIP, Sandy Koufax's 1.11 beats Willie Foster's 1.15.
Willie Foster vs Sandy Koufax: Frequently Asked Questions
- Who was better, Willie Foster or Sandy Koufax?
- By the career statistics compared on this page, Sandy Koufax leads Willie Foster in 8 of the 12 scored categories.
- Who had the better ERA?
- Willie Foster, with 2.66 to Sandy Koufax's 2.76.
- Who won more games?
- Sandy Koufax, with 165 to Willie Foster's 125.
- Who recorded more strikeouts?
- Sandy Koufax, with 2,396 to Willie Foster's 1,062.
- Who had the better WHIP?
- Sandy Koufax, with 1.11 to Willie Foster's 1.15.