Pitcher · 2023
Zach Jackson
- Age
- 29
- B/T
- R/R
- Height
- 6' 4"
- Weight
- 230 lb
- Born
- December 25, 1994 in Tulsa, OK, USA
- MLB debut
- April 9, 2022
- dbWAR
- 1.2 2 season(s)
- IP
- 18.0
- ERA
- 2.50
- FIP
- 3.09
- K/9
- 11.5
- FIP−
- 71 100 = avg
Zach Jackson is a relief pitcher for the Oakland Athletics. In 2023 he struck out 23 batters over 18.0 innings across 19 appearances, going 2-1. His ERA of 2.50 was 42.3% lower than the league average of 4.33. Stripping out defence, his 3.09 FIP suggests that his ERA had some help behind him. He missed bats on 27.7% of swings (11.8% of every pitch he threw), walked 12.5% of the batters he faced and struck out 28.7%. His 0.3 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, 2023.
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 19 | 0 | 18.0 | 2 | 1 | 1 | 18 | 5 | 23 | 10 | 2.50 | 3.09 | 1.56 | 11.5 | 5.0 | 58 | 71 | 0.3 | |
| 2022 | 54 | 0 | 48.0 | 2 | 3 | 3 | 28 | 16 | 67 | 33 | 3.00 | 2.78 | 1.27 | 12.6 | 6.2 | 76 | 70 | 0.9 |
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 | 37 | 33 | 6 | 0 | 3 | 12 | .182 | .250 | .182 | .206 | 32.4% |
| vs RHB | 43 | 36 | 12 | 1 | 7 | 11 | .333 | .442 | .472 | .405 | 25.6% |
Pitch sequencing
What Zach Jackson throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Zach Jackson throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2023.
| Four-Seam Fastball | 219 | 93.1 | 2,128 | 46.1% | 24.2% | |
| Slider | 150 | 83.9 | 2,421 | 45.3% | 33.9% |
Head to head
Put Zach Jackson 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.