Edwin Diaz vs Devin Williams: Career Stats Comparison
Edwin Diaz has the better career line of the two, leading 7 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Edwin Diaz has played 2016–present as a pitcher; Devin Williams has played 2019–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
Edwin Diaz (2016–present) and Devin Williams (2019–present) — both came up during the 2010s, so the matchup is a direct one. Edwin Diaz has 30 wins and 867 strikeouts through October 12, 2026; Devin Williams has 34 wins and 517 strikeouts through October 12, 2026. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Devin Williams, with 2.69 to Edwin Diaz's 3.03.
- Who won more games? Devin Williams, with 34 to Edwin Diaz's 30.
- Who recorded more strikeouts? Edwin Diaz, with 867 to Devin Williams's 517.
- Who had the better WHIP? Edwin Diaz, with 1.07 to Devin Williams's 1.11.
- Who pitched more innings? Edwin Diaz, with 538.0 to Devin Williams's 338.1.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Edwin Diaz, with 21,805 career Pitcher PIV to Devin Williams's 13,215.
Devin Williams
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.
Edwin Diaz and Devin Williams are still active — their totals below are current through October 12, 2026.
| Statistic | Edwin Diaz | Devin Williams |
|---|---|---|
| Wins | 30 | Leads: 34 |
| Losses not scored | 38 | 18 |
| Games | Leads: 541 | 352 |
| Games Started | 0 | 0 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | Leads: 260 | 102 |
| Strikeouts | Leads: 867 | 517 |
| Walks not scored | 193 | 158 |
| Hits Allowed not scored | 382 | 217 |
| Home Runs Allowed not scored | 57 | 23 |
| Innings Pitched | Leads: 538.0 | 338.1 |
| ERA | 3.03 | Leads: 2.69 |
| WHIP | Leads: 1.07 | 1.11 |
| K/9 | Leads: 14.50 | 13.75 |
| BB/9 | Leads: 3.23 | 4.20 |
PIV Comparison through 2025
By PIV (Player Impact Value), Edwin Diaz outpaces Devin Williams 21,805 to 13,215 — driven by both sides of the ledger: 2,423 PIV per season to 1,888, across 9 seasons to 7. 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).
Edwin Diaz
No seasons meet the qualifying workload, so there is no peak-season list to show.
Devin Williams
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
On the head-to-head card, Edwin Diaz leads in strikeouts, WHIP, K/9, and innings pitched, while Devin Williams owns wins and ERA. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Edwin Diaz. PIV agrees: Edwin Diaz grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Edwin Diaz and Devin Williams careers compare
The two careers overlap from 2019 on, with both players still active. Edwin Diaz has the far longer record, 541 games against 352 across 9 and 7 PIV seasons, which inflates every career total. Devin Williams's edges on the table are wins (34 to 30) and ERA (2.69 to 3.03). By rate, Edwin Diaz struck out 14.50 and walked 3.23 per nine innings; Devin Williams struck out 13.75 and walked 4.20. Edwin Diaz worked mostly in relief (0 starts in 541 games, 260 saves), and Devin Williams worked mostly in relief (0 starts in 352 games, 102 saves). In WHIP, Edwin Diaz's 1.07 beats Devin Williams's 1.11. Because Edwin Diaz and Devin Williams are still playing, the totals above will keep moving through the season.
Edwin Diaz vs Devin Williams: Frequently Asked Questions
- Who was better, Edwin Diaz or Devin Williams?
- By the career statistics compared on this page, Edwin Diaz leads Devin Williams in 7 of the 12 scored categories.
- Who had the better ERA?
- Devin Williams, with 2.69 to Edwin Diaz's 3.03.
- Who won more games?
- Devin Williams, with 34 to Edwin Diaz's 30.
- Who recorded more strikeouts?
- Edwin Diaz, with 867 to Devin Williams's 517.
- Who had the better WHIP?
- Edwin Diaz, with 1.07 to Devin Williams's 1.11.