Pitcher · 2026
Ryan Zeferjahn
- Age
- 28
- B/T
- R/R
- Height
- 6' 5"
- Weight
- 209 lb
- Number
- #56
- Born
- February 28, 1998 in Topeka, KS, USA
- MLB debut
- August 25, 2024
- Drafted
- 2019, round 3
- College
- Kansas
- High school
- Seaman
- dbWAR
- .4 3 season(s)
- IP
- 54.1
- ERA
- 3.64
- FIP
- 3.88
- K/9
- 13.1
- FIP−
- 93 100 = avg
Ryan Zeferjahn is a relief pitcher for the Los Angeles Angels. In 2026 he struck out 79 batters over 54.1 innings across 48 appearances, going 4-3. His ERA of 3.64 was 12.7% lower than the league average of 4.18 — 6th of 18 on his team, and 197th of 467 among MLB pitchers with 20+ innings. Stripping out defence, his 3.88 FIP suggests the ERA was no fluke. He missed bats on 34.4% of swings (13.8% of every pitch he threw), walked 13.6% of the batters he faced and struck out 33.6%. His 0.5 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 | 109 | 88 | 17 | 4 | 15 | 36 | .193 | .333 | .386 | .316 | 33.0% |
| vs RHB | 125 | 104 | 15 | 2 | 16 | 43 | .144 | .288 | .231 | .256 | 34.4% |
Pitch sequencing
What Ryan Zeferjahn throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Ryan Zeferjahn throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2026.
| Sweeper | 371 | 85.2 | 2,680 | 51.5% | 40.0% | |
| Four-Seam Fastball | 336 | 97.4 | 2,280 | 46.7% | 39.8% | |
| Sinker | 153 | 96.1 | 2,033 | 41.8% | 11.5% | |
| Slider | 106 | 88.6 | 2,534 | 44.3% | 21.3% | |
| Curveball | 28 | 84.3 | 2,724 | 32.1% | 45.5% | |
| Unknown | 10 | 54.8 | 1,090 | 30.0% | 100.0% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 48 | 0 | 54.1 | 4 | 3 | 4 | 32 | 22 | 79 | 32 | 3.64 | 3.88 | 1.18 | 13.1 | 5.3 | 87 | 93 | 0.5 | |
| 2025 | 62 | 1 | 57.0 | 6 | 5 | 2 | 49 | 30 | 73 | 35 | 4.74 | 5.36 | 1.47 | 11.5 | 5.5 | 114 | 129 | -0.5 | |
| 2024 | 12 | 0 | 17.0 | 0 | 0 | 0 | 7 | 4 | 18 | 6 | 2.12 | 2.46 | 0.76 | 9.5 | 3.2 | 52 | 60 | 0.4 |
Head to head
Put Ryan Zeferjahn beside up to three others.
Similar players
Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.
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.