Kenley Jansen vs Jeff Reardon: Career Stats Comparison
Kenley Jansen 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). Kenley Jansen has played 2010–present as a pitcher; Jeff Reardon played 1979–1994 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
Kenley Jansen (2010–present) and Jeff Reardon (1979–1994) — breaking in during the 2010s and the 1970s respectively, so they pitched against very different hitting environments. Kenley Jansen has 58 wins and 1,329 strikeouts through October 12, 2026; Jeff Reardon finished with 73 wins and 877 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Kenley Jansen, with 2.60 to Jeff Reardon's 3.16.
- Who won more games? Jeff Reardon, with 73 to Kenley Jansen's 58.
- Who recorded more strikeouts? Kenley Jansen, with 1,329 to Jeff Reardon's 877.
- Who had the better WHIP? Kenley Jansen, with 0.97 to Jeff Reardon's 1.20.
- Who pitched more innings? Jeff Reardon, with 1,132.1 to Kenley Jansen's 972.1.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Kenley Jansen, with 34,863 career Pitcher PIV to Jeff Reardon's 11,952.
Kenley Jansen
Jeff Reardon
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 1970s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Kenley Jansen is still active — his totals below are current through October 12, 2026.
| Statistic | Kenley Jansen | Jeff Reardon |
|---|---|---|
| Wins | 58 | Leads: 73 |
| Losses not scored | 46 | 77 |
| Games | Leads: 983 | 880 |
| Games Started | 0 | 0 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | Leads: 498 | 367 |
| Strikeouts | Leads: 1,329 | 877 |
| Walks not scored | 305 | 358 |
| Hits Allowed not scored | 634 | 1,000 |
| Home Runs Allowed not scored | 95 | 109 |
| Innings Pitched | 972.1 | Leads: 1,132.1 |
| ERA | Leads: 2.60 | 3.16 |
| WHIP | Leads: 0.97 | 1.20 |
| K/9 | Leads: 12.30 | 6.97 |
| BB/9 | Leads: 2.82 | 2.85 |
PIV Comparison through 2025
By PIV (Player Impact Value), Kenley Jansen outpaces Jeff Reardon 34,863 to 11,952 — driven by per-season impact — 2,179 PIV per season to 664 — rather than by longevity, since Kenley Jansen played 16 seasons to Jeff Reardon's 18. 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).
Kenley Jansen
No seasons meet the qualifying workload, so there is no peak-season list to show.
Jeff Reardon
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
On the head-to-head card, Kenley Jansen leads in strikeouts, ERA, WHIP, and K/9, while Jeff Reardon owns wins and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Kenley Jansen. PIV agrees: Kenley Jansen grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Kenley Jansen and Jeff Reardon careers compare
The two careers never overlapped: Jeff Reardon's ended in 1994, and Kenley Jansen debuted in 2010. The two careers are close in length, 983 games for Kenley Jansen and 880 for Jeff Reardon across 16 and 18 PIV seasons, so the totals compare on fairly even terms. The green cells for Jeff Reardon are wins (73 to 58) and innings (1,132.1 to 972.1). By rate, Kenley Jansen struck out 12.30 and walked 2.82 per nine innings; Jeff Reardon struck out 6.97 and walked 2.85. Both had the same role: Kenley Jansen worked mostly in relief (0 starts in 983 games, 498 saves); Jeff Reardon worked mostly in relief (0 starts in 880 games, 367 saves). Because Kenley Jansen is still playing, the totals above will keep moving through the season.
Kenley Jansen vs Jeff Reardon: Frequently Asked Questions
- Who was better, Kenley Jansen or Jeff Reardon?
- By the career statistics compared on this page, Kenley Jansen leads Jeff Reardon in 7 of the 12 scored categories.
- Who had the better ERA?
- Kenley Jansen, with 2.60 to Jeff Reardon's 3.16.
- Who won more games?
- Jeff Reardon, with 73 to Kenley Jansen's 58.
- Who recorded more strikeouts?
- Kenley Jansen, with 1,329 to Jeff Reardon's 877.
- Who had the better WHIP?
- Kenley Jansen, with 0.97 to Jeff Reardon's 1.20.