Emmanuel Clase vs Scott Williamson: Career Stats Comparison
Emmanuel Clase and Scott Williamson are close to even, splitting the 12 scored categories on this page 5–5 (4 further counting totals are shown but not scored). Emmanuel Clase played 2019–2025 as a pitcher; Scott Williamson played 1999–2007 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
Emmanuel Clase (2019–2025) and Scott Williamson (1999–2007) — breaking in during the 2010s and the 1990s respectively, so they pitched against very different hitting environments. Emmanuel Clase finished with 21 wins and 349 strikeouts; Scott Williamson finished with 28 wins and 510 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Emmanuel Clase, with 1.88 to Scott Williamson's 3.36.
- Who won more games? Scott Williamson, with 28 to Emmanuel Clase's 21.
- Who recorded more strikeouts? Scott Williamson, with 510 to Emmanuel Clase's 349.
- Who had the better WHIP? Emmanuel Clase, with 0.94 to Scott Williamson's 1.30.
- Who pitched more innings? Scott Williamson, with 439.1 to Emmanuel Clase's 360.0.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Emmanuel Clase, with 15,946 career Pitcher PIV to Scott Williamson's 11,282.
Emmanuel Clase
Scott Williamson
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 2010s and the 1990s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Emmanuel Clase | Scott Williamson |
|---|---|---|
| Wins | 21 | Leads: 28 |
| Losses not scored | 26 | 28 |
| Games | Leads: 366 | 344 |
| Games Started | 1 | Leads: 10 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | Leads: 182 | 55 |
| Strikeouts | 349 | Leads: 510 |
| Walks not scored | 70 | 244 |
| Hits Allowed not scored | 267 | 326 |
| Home Runs Allowed not scored | 15 | 35 |
| Innings Pitched | 360.0 | Leads: 439.1 |
| ERA | Leads: 1.88 | 3.36 |
| WHIP | Leads: 0.94 | 1.30 |
| K/9 | 8.72 | Leads: 10.45 |
| BB/9 | Leads: 1.75 | 5.00 |
PIV Comparison through 2025
By PIV (Player Impact Value), Emmanuel Clase outpaces Scott Williamson 15,946 to 11,282 — driven by per-season impact — 2,658 PIV per season to 1,026 — rather than by longevity, since Emmanuel Clase played 6 seasons to Scott Williamson's 11. 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).
Emmanuel Clase
No seasons meet the qualifying workload, so there is no peak-season list to show.
Scott Williamson
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
On the head-to-head card, Scott Williamson leads in wins, strikeouts, K/9, and innings pitched, while Emmanuel Clase owns ERA and WHIP. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Scott Williamson. Note that PIV actually grades Emmanuel Clase ahead, which means Scott Williamson's edge is partly volume. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Emmanuel Clase and Scott Williamson careers compare
No season is shared: Scott Williamson played 1999–2007, Emmanuel Clase 2019–2025. With 366 games against 344 across 6 and 11 PIV seasons, neither player's totals owe much to extra seasons. By rate, Emmanuel Clase struck out 8.72 and walked 1.75 per nine innings; Scott Williamson struck out 10.45 and walked 5.00. Emmanuel Clase worked mostly in relief (1 starts in 366 games, 182 saves), and Scott Williamson worked mostly in relief (10 starts in 344 games, 55 saves). Emmanuel Clase allowed fewer baserunners, a 0.94 WHIP to Scott Williamson's 1.30.
Emmanuel Clase vs Scott Williamson: Frequently Asked Questions
- Who had the better ERA?
- Emmanuel Clase, with 1.88 to Scott Williamson's 3.36.
- Who won more games?
- Scott Williamson, with 28 to Emmanuel Clase's 21.
- Who recorded more strikeouts?
- Scott Williamson, with 510 to Emmanuel Clase's 349.
- Who had the better WHIP?
- Emmanuel Clase, with 0.94 to Scott Williamson's 1.30.