Mason Miller vs Troy Percival: Career Stats Comparison
Mason Miller and Troy Percival are close to even, splitting the 12 scored categories on this page 5–5 (4 further counting totals are shown but not scored). Mason Miller has played 2023–present as a pitcher; Troy Percival played 1995–2009 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
Mason Miller (2023–present) and Troy Percival (1995–2009) — breaking in during the 2020s and the 1990s respectively, so they pitched against very different hitting environments. Mason Miller has 8 wins and 375 strikeouts through October 12, 2026; Troy Percival finished with 35 wins and 781 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Mason Miller, with 2.47 to Troy Percival's 3.17.
- Who won more games? Troy Percival, with 35 to Mason Miller's 8.
- Who recorded more strikeouts? Troy Percival, with 781 to Mason Miller's 375.
- Who had the better WHIP? Mason Miller, with 0.94 to Troy Percival's 1.11.
- Who pitched more innings? Troy Percival, with 708.2 to Mason Miller's 230.0.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Troy Percival, with 10,919 career Pitcher PIV to Mason Miller's 6,845.
Mason Miller
Troy Percival
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 2020s and the 1990s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Mason Miller is still active — his totals below are current through October 12, 2026.
| Statistic | Mason Miller | Troy Percival |
|---|---|---|
| Wins | 8 | Leads: 35 |
| Losses not scored | 9 | 43 |
| Games | 191 | Leads: 703 |
| Games Started | Leads: 6 | 1 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | 88 | Leads: 358 |
| Strikeouts | 375 | Leads: 781 |
| Walks not scored | 91 | 306 |
| Hits Allowed not scored | 125 | 479 |
| Home Runs Allowed not scored | 16 | 85 |
| Innings Pitched | 230.0 | Leads: 708.2 |
| ERA | Leads: 2.47 | 3.17 |
| WHIP | Leads: 0.94 | 1.11 |
| K/9 | Leads: 14.67 | 9.92 |
| BB/9 | Leads: 3.56 | 3.89 |
PIV Comparison through 2025
By PIV (Player Impact Value), Troy Percival outpaces Mason Miller 10,919 to 6,845 — a longevity gap rather than a per-season one: Troy Percival played 14 seasons to Mason Miller's 4, while Mason Miller carries the higher per-season figure (1,711 to 780). 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).
Mason Miller
No seasons meet the qualifying workload, so there is no peak-season list to show.
Troy Percival
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, and innings pitched, while Mason Miller owns ERA, WHIP, and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Troy Percival. PIV agrees: Troy Percival grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Mason Miller and Troy Percival careers compare
The two careers never overlapped: Troy Percival's ended in 2009, and Mason Miller debuted in 2023. Troy Percival has the far longer record, 703 games against 191 across 4 and 14 PIV seasons, which inflates every career total. By rate, Mason Miller struck out 14.67 and walked 3.56 per nine innings; Troy Percival struck out 9.92 and walked 3.89. Both had the same role: Mason Miller worked mostly in relief (6 starts in 191 games, 88 saves); Troy Percival worked mostly in relief (1 starts in 703 games, 358 saves). Mason Miller allowed fewer baserunners, a 0.94 WHIP to Troy Percival's 1.11. Mason Miller's numbers are live and update with each game, so the comparison is a snapshot.
Mason Miller vs Troy Percival: Frequently Asked Questions
- Who had the better ERA?
- Mason Miller, with 2.47 to Troy Percival's 3.17.
- Who won more games?
- Troy Percival, with 35 to Mason Miller's 8.
- Who recorded more strikeouts?
- Troy Percival, with 781 to Mason Miller's 375.
- Who had the better WHIP?
- Mason Miller, with 0.94 to Troy Percival's 1.11.