Pitcher · 2017
Jack Leathersich
- Age
- 27
- B/T
- R/L
- Height
- 5' 11"
- Weight
- 205 lb
- Number
- #51
- Born
- July 14, 1990 in Beverly, MA, USA
- MLB debut
- April 29, 2015
- dbWAR
- .3 2 season(s)
- IP
- 5.0
- ERA
- 3.60
- FIP
- 3.96
- K/9
- 12.6
- FIP−
- 91 100 = avg
Jack Leathersich is a relief pitcher for the Pittsburgh Pirates. In 2017 he struck out 7 batters over 5.0 innings across 7 appearances, going 0-0. His ERA of 3.60 was 17.4% lower than the league average of 4.36. Stripping out defence, his 3.96 FIP suggests that his ERA had some help behind him. He missed bats on 35.3% of swings (11.4% of every pitch he threw), walked 24.0% of the batters he faced and struck out 28.0%. His 0.0 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, 2017.
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 7 | 0 | 5.0 | 0 | 0 | 0 | 4 | 2 | 7 | 6 | 3.60 | 3.96 | 2.00 | 12.6 | 10.8 | 83 | 91 | 0.0 | |
| 2015 | 17 | 0 | 11.2 | 0 | 1 | 0 | 12 | 3 | 14 | 7 | 2.31 | 2.79 | 1.63 | 10.8 | 5.4 | 58 | 70 | 0.2 |
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 | 8 | 6 | 0 | 0 | 1 | 3 | .000 | .125 | .000 | .089 | 37.5% |
| vs RHB | 17 | 11 | 4 | 0 | 5 | 4 | .364 | .529 | .545 | .461 | 23.5% |
Pitch sequencing
What Jack Leathersich throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Jack Leathersich throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2017.
| Four-Seam Fastball | 87 | 91.7 | 2,309 | 42.5% | 34.5% | |
| Changeup | 11 | 83.4 | 1,815 | 27.3% | 0.0% |
Head to head
Put Jack Leathersich 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.