Troy Percival vs Devin Williams: Career Stats Comparison
Troy Percival 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). Troy Percival played 1995–2009 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
Troy Percival (1995–2009) and Devin Williams (2019–present) — breaking in during the 1990s and the 2010s respectively, so they pitched against very different hitting environments. Troy Percival finished with 35 wins and 781 strikeouts; 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 Troy Percival's 3.17.
- Who won more games? Troy Percival, with 35 to Devin Williams's 34.
- Who recorded more strikeouts? Troy Percival, with 781 to Devin Williams's 517.
- Who had the better WHIP? Neither — both are at 1.11.
- Who pitched more innings? Troy Percival, with 708.2 to Devin Williams's 338.1.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Devin Williams, with 13,215 career Pitcher PIV to Troy Percival's 10,919.
Troy Percival
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, and the 1990s and the 2010s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Devin Williams is still active — his totals below are current through October 12, 2026.
| Statistic | Troy Percival | Devin Williams |
|---|---|---|
| Wins | Leads: 35 | 34 |
| Losses not scored | 43 | 18 |
| Games | Leads: 703 | 352 |
| Games Started | Leads: 1 | 0 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | Leads: 358 | 102 |
| Strikeouts | Leads: 781 | 517 |
| Walks not scored | 306 | 158 |
| Hits Allowed not scored | 479 | 217 |
| Home Runs Allowed not scored | 85 | 23 |
| Innings Pitched | Leads: 708.2 | 338.1 |
| ERA | 3.17 | Leads: 2.69 |
| WHIP | Leads: 1.11 | 1.11 |
| K/9 | 9.92 | Leads: 13.75 |
| BB/9 | Leads: 3.89 | 4.20 |
PIV Comparison through 2025
By PIV (Player Impact Value), Devin Williams leads Troy Percival 13,215 to 10,919 — driven by per-season impact — 1,888 PIV per season to 780 — rather than by longevity, since Devin Williams played 7 seasons to Troy Percival's 14. 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).
Troy Percival
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, Troy Percival leads in wins, strikeouts, WHIP, and innings pitched, while Devin Williams owns ERA and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Troy Percival. Note that PIV actually grades Devin Williams ahead, which means Troy Percival's edge is partly volume. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Troy Percival and Devin Williams careers compare
Troy Percival (1995–2009) was finished before Devin Williams (2019–present) arrived, so they never shared a league. Playing time explains much of the gap in the counting rows: Troy Percival appeared in 703 games to Devin Williams's 352. The green cells for Devin Williams are ERA (2.69 to 3.17) and strikeouts per nine (13.75 to 9.92). The per-nine rows read 9.92 strikeouts and 3.89 walks for Troy Percival, 13.75 and 4.20 for Devin Williams. Both had the same role: Troy Percival worked mostly in relief (1 starts in 703 games, 358 saves); Devin Williams worked mostly in relief (0 starts in 352 games, 102 saves). In WHIP, Troy Percival's 1.11 beats Devin Williams's 1.11. Devin Williams's numbers are live and update with each game, so the comparison is a snapshot.
Troy Percival vs Devin Williams: Frequently Asked Questions
- Who was better, Troy Percival or Devin Williams?
- By the career statistics compared on this page, Troy Percival leads Devin Williams in 8 of the 12 scored categories.
- Who had the better ERA?
- Devin Williams, with 2.69 to Troy Percival's 3.17.
- Who won more games?
- Troy Percival, with 35 to Devin Williams's 34.
- Who recorded more strikeouts?
- Troy Percival, with 781 to Devin Williams's 517.
- Who had the better WHIP?
- Neither — both are at 1.11.