Pitcher · 2019
Williams Jerez
- Age
- 27
- B/T
- L/L
- Height
- 6' 4"
- Weight
- 210 lb
- Born
- May 16, 1992 in Santiago, Dominican Republic
- MLB debut
- August 7, 2018
- dbWAR
- -.3 2 season(s)
- IP
- 10.1
- ERA
- 4.35
- FIP
- 6.60
- K/9
- 7.8
- FIP−
- 147 100 = avg
Williams Jerez is a relief pitcher for the Pittsburgh Pirates. In 2019 he struck out 9 batters over 10.1 innings across 12 appearances, going 1-0. His ERA of 4.35 was 3.3% lower than the league average of 4.51. Stripping out defence, his 6.60 FIP suggests that his ERA had some help behind him. He missed bats on 19.5% of swings (8.9% of every pitch he threw), walked 18.8% of the batters he faced and struck out 18.8%. 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, 2019.
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | 12 | 0 | 10.1 | 1 | 0 | 0 | 12 | 5 | 9 | 9 | 4.35 | 6.60 | 2.03 | 7.8 | 7.8 | 97 | 147 | -0.2 | |
| 2018 | 17 | 0 | 15.0 | 0 | 0 | 0 | 17 | 10 | 15 | 8 | 6.00 | 5.36 | 1.67 | 9.0 | 4.8 | 145 | 129 | -0.1 |
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 | 19 | 16 | 6 | 1 | 3 | 1 | .375 | .474 | .625 | .463 | 5.3% |
| vs RHB | 29 | 23 | 6 | 1 | 6 | 8 | .261 | .414 | .522 | .400 | 27.6% |
Pitch sequencing
What Williams Jerez throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Williams Jerez throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2019.
| Four-Seam Fastball | 106 | 94.1 | 2,119 | 42.5% | 9.4% | |
| Slider | 62 | 87.1 | 2,064 | 40.3% | 30.4% | |
| Changeup | 23 | 86.3 | 1,065 | 43.5% | 45.5% |
Head to head
Put Williams Jerez 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.