Edwin Diaz vs Billy Wagner: Career Stats Comparison
Billy Wagner 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). Edwin Diaz has played 2016–present as a pitcher; Billy Wagner played 1995–2010 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 Billy Wagner (1995–2010) — breaking in during the 2010s and the 1990s respectively, so they pitched against very different hitting environments. Edwin Diaz has 30 wins and 867 strikeouts through October 6, 2026; Billy Wagner finished with 47 wins and 1,196 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Billy Wagner, with 2.31 to Edwin Diaz's 3.03.
- Who won more games? Billy Wagner, with 47 to Edwin Diaz's 30.
- Who recorded more strikeouts? Billy Wagner, with 1,196 to Edwin Diaz's 867.
- Who had the better WHIP? Billy Wagner, with 1.00 to Edwin Diaz's 1.07.
- Who pitched more innings? Billy Wagner, with 903.0 to Edwin Diaz's 538.0.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Billy Wagner, with 38,470 career Pitcher PIV to Edwin Diaz's 21,805.
Billy Wagner
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.
Edwin Diaz is still active — his totals below are current through October 6, 2026.
| Statistic | Edwin Diaz | Billy Wagner |
|---|---|---|
| Wins | 30 | Leads: 47 |
| Losses not scored | 38 | 40 |
| Games | 541 | Leads: 853 |
| Games Started | 0 | 0 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | 260 | Leads: 422 |
| Strikeouts | 867 | Leads: 1,196 |
| Walks not scored | 193 | 300 |
| Hits Allowed not scored | 382 | 601 |
| Home Runs Allowed not scored | 57 | 82 |
| Innings Pitched | 538.0 | Leads: 903.0 |
| ERA | 3.03 | Leads: 2.31 |
| WHIP | 1.07 | Leads: 1.00 |
| K/9 | Leads: 14.50 | 11.92 |
| BB/9 | 3.23 | Leads: 2.99 |
PIV Comparison through 2025
By PIV (Player Impact Value), Billy Wagner outpaces Edwin Diaz 38,470 to 21,805 — a longevity gap rather than a per-season one: Billy Wagner played 17 seasons to Edwin Diaz's 9, while Edwin Diaz carries the higher per-season figure (2,423 to 2,263). 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.
Billy Wagner
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
On the head-to-head card, Billy Wagner leads in wins, strikeouts, ERA, and WHIP, while Edwin Diaz owns K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Billy Wagner. PIV agrees: Billy Wagner 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 Billy Wagner careers compare
The two careers never overlapped: Billy Wagner's ended in 2010, and Edwin Diaz debuted in 2016. The table compares 541 games of Edwin Diaz with 853 of Billy Wagner across 9 and 17 PIV seasons; totals favor the longer career by default. Where Edwin Diaz comes out ahead, it is in strikeouts per nine (14.50 to 11.92). The per-nine rows read 14.50 strikeouts and 3.23 walks for Edwin Diaz, 11.92 and 2.99 for Billy Wagner. Both had the same role: Edwin Diaz worked mostly in relief (0 starts in 541 games, 260 saves); Billy Wagner worked mostly in relief (0 starts in 853 games, 422 saves). In WHIP, Billy Wagner's 1.00 beats Edwin Diaz's 1.07. Because Edwin Diaz is still playing, the totals above will keep moving through the season.
Edwin Diaz vs Billy Wagner: Frequently Asked Questions
- Who was better, Edwin Diaz or Billy Wagner?
- By the career statistics compared on this page, Billy Wagner leads Edwin Diaz in 8 of the 12 scored categories.
- Who had the better ERA?
- Billy Wagner, with 2.31 to Edwin Diaz's 3.03.
- Who won more games?
- Billy Wagner, with 47 to Edwin Diaz's 30.
- Who recorded more strikeouts?
- Billy Wagner, with 1,196 to Edwin Diaz's 867.
- Who had the better WHIP?
- Billy Wagner, with 1.00 to Edwin Diaz's 1.07.