Pitcher · 2026
Hayden Juenger
- Age
- 26
- B/T
- R/R
- Height
- 6' 0"
- Weight
- 180 lb
- Number
- #58
- Born
- August 9, 2000 in O’Fallon, IL, USA
- MLB debut
- May 31, 2026
- Drafted
- 2021, round 6
- College
- Missouri State
- dbWAR
- .1 1 season(s)
- IP
- 11.1
- ERA
- 7.15
- FIP
- 3.79
- K/9
- 4.0
- FIP−
- 91 100 = avg
Hayden Juenger is a relief pitcher for the Athletics. In 2026 he struck out 5 batters over 11.1 innings across 10 appearances, going 0-1. His ERA of 7.15 was 71.2% higher than the league average of 4.18. Stripping out defence, his 3.79 FIP suggests he pitched better than his ERA shows. He missed bats on 15.3% of swings (7.1% of every pitch he threw), walked 8.9% of the batters he faced and struck out 8.9%. His 0.1 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.
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 | 22 | 17 | 7 | 0 | 4 | 1 | .412 | .500 | .529 | .449 | 4.5% |
| vs RHB | 34 | 30 | 10 | 0 | 1 | 4 | .333 | .353 | .433 | .338 | 11.8% |
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, and how often it misses in 2026.
| Four-Seam Fastball | 75 | 94.6 | 2,355 | 45.3% | 15.2% | |
| Slider | 60 | 88.0 | 2,351 | 43.3% | 9.1% | |
| Changeup | 49 | 88.4 | 2,316 | 32.7% | 26.1% | |
| Cutter | 27 | 91.5 | 2,347 | 40.7% | 11.1% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 10 | 0 | 11.1 | 0 | 1 | 0 | 17 | 9 | 5 | 5 | 7.15 | 3.79 | 1.94 | 4.0 | 4.0 | 171 | 91 | 0.1 | — |
Head to head
Put Hayden Juenger beside up to three others.
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.