Kenley Jansen vs Mike Marshall: 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; Mike Marshall played 1967–1981 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 Mike Marshall (1967–1981) — breaking in during the 2010s and the 1960s respectively, so they pitched against very different hitting environments. Kenley Jansen has 58 wins and 1,329 strikeouts through October 12, 2026; Mike Marshall finished with 97 wins and 880 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 Mike Marshall's 3.14.
- Who won more games? Mike Marshall, with 97 to Kenley Jansen's 58.
- Who recorded more strikeouts? Kenley Jansen, with 1,329 to Mike Marshall's 880.
- Who had the better WHIP? Kenley Jansen, with 0.97 to Mike Marshall's 1.29.
- Who pitched more innings? Mike Marshall, with 1,386.2 to Kenley Jansen's 972.1.
- Who threw more shutouts? Mike Marshall, with 1 to Kenley Jansen's 0.
- Who has the higher career Pitcher PIV? Kenley Jansen, with 34,863 career Pitcher PIV to Mike Marshall's 15,195.
Kenley Jansen
Mike Marshall
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 1960s 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 | Mike Marshall |
|---|---|---|
| Wins | 58 | Leads: 97 |
| Losses not scored | 46 | 112 |
| Games | Leads: 983 | 724 |
| Games Started | 0 | Leads: 24 |
| Complete Games | 0 | Leads: 3 |
| Shutouts | 0 | Leads: 1 |
| Saves | Leads: 498 | 188 |
| Strikeouts | Leads: 1,329 | 880 |
| Walks not scored | 305 | 514 |
| Hits Allowed not scored | 634 | 1,281 |
| Home Runs Allowed not scored | 95 | 79 |
| Innings Pitched | 972.1 | Leads: 1,386.2 |
| ERA | Leads: 2.60 | 3.14 |
| WHIP | Leads: 0.97 | 1.29 |
| K/9 | Leads: 12.30 | 5.71 |
| BB/9 | Leads: 2.82 | 3.34 |
PIV Comparison through 2025
By PIV (Player Impact Value), Kenley Jansen outpaces Mike Marshall 34,863 to 15,195 — driven by per-season impact — 2,179 PIV per season to 894 — rather than by longevity, since Kenley Jansen played 16 seasons to Mike Marshall's 17. 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.
Mike Marshall — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Kenley Jansen leads in strikeouts, ERA, WHIP, and K/9, while Mike Marshall 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 Mike Marshall careers compare
Mike Marshall (1967–1981) was finished before Kenley Jansen (2010–present) arrived, so they never shared a league. With 983 games against 724 across 16 and 17 PIV seasons, neither player's totals owe much to extra seasons. By rate, Kenley Jansen struck out 12.30 and walked 2.82 per nine innings; Mike Marshall struck out 5.71 and walked 3.34. Both had the same role: Kenley Jansen worked mostly in relief (0 starts in 983 games, 498 saves); Mike Marshall worked mostly in relief (24 starts in 724 games, 188 saves). In WHIP, Kenley Jansen's 0.97 beats Mike Marshall's 1.29. Kenley Jansen has no qualifying season for the peak list, while Mike Marshall's best is 1974. Kenley Jansen's numbers are live and update with each game, so the comparison is a snapshot.
Kenley Jansen vs Mike Marshall: Frequently Asked Questions
- Who was better, Kenley Jansen or Mike Marshall?
- By the career statistics compared on this page, Kenley Jansen leads Mike Marshall in 7 of the 12 scored categories.
- Who had the better ERA?
- Kenley Jansen, with 2.60 to Mike Marshall's 3.14.
- Who won more games?
- Mike Marshall, with 97 to Kenley Jansen's 58.
- Who recorded more strikeouts?
- Kenley Jansen, with 1,329 to Mike Marshall's 880.
- Who had the better WHIP?
- Kenley Jansen, with 0.97 to Mike Marshall's 1.29.