Players · J · Pitcher · 2026 regular season
Hayden Juenger
- Age
- 26
- B/T
- R/R
- Height
- 6' 0"
- Weight
- 180 lb
- Number
- #58
- Born
- August 9, 2000 in O’Fallon, IL, United States
- MLB debut
- May 31, 2026
- Drafted
- 2021, round 6
- College
- Missouri State
- dbWAR
- .2 Regular season, 1 season(s)
- IP
- 16.0
- ERA
- 9.00
- FIP
- 4.04
- K/9
- 3.4
- FIP−
- 97 100 = avg
Hayden Juenger is a relief pitcher for the Athletics. In 2026 he struck out 6 batters over 16.0 innings across 15 appearances, going 0-1. His ERA of 9.00 was 115.2% higher than the league average of 4.18. Stripping out defence, his 4.04 FIP suggests he pitched better than his ERA shows. He missed bats on 14.8% of swings (6.8% of every pitch he threw), walked 9.9% of the batters he faced and struck out 7.4%. His 0.2 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026 regular season.
Pitching Regular season
Standard and advanced, by season. Regular-season games only.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 32 | 26 | 10 | 0 | 5 | 2 | .385 | .469 | .462 | .415 | 6.3% |
| vs RHB | 49 | 41 | 14 | 0 | 3 | 4 | .341 | .383 | .488 | .375 | 8.2% |
Pitch sequencing
What Hayden Juenger throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Hayden Juenger throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Four-Seam Fastball | 102 | 94.6 | 2,356 | 45.1% | 14.9% | 18 | .389 | .978 | |
| Slider | 71 | 88.1 | 2,358 | 43.7% | 11.1% | 18 | .444 | 1.011 | |
| Changeup | 62 | 88.5 | 2,321 | 30.6% | 24.1% | 20 | .250 | .586 | |
| Cutter | 57 | 91.3 | 2,364 | 33.3% | 8.7% | 11 | — | — |
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wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.