
Pitcher · 2020
Shun Yamaguchi
- Age
- 33
- B/T
- R/R
- Height
- 6' 2"
- Weight
- 225 lb
- Born
- July 11, 1987 in Nakatsu, Japan
- MLB debut
- July 26, 2020
- dbWAR
- -.4 1 season(s)
- IP
- 25.2
- ERA
- 8.06
- FIP
- 6.43
- K/9
- 9.1
- FIP−
- 144 100 = avg
Shun Yamaguchi is a relief pitcher for the Toronto Blue Jays. In 2020 he struck out 26 batters over 25.2 innings across 17 appearances, going 2-4. His ERA of 8.06 was 81.1% higher than the league average of 4.45 — the worst on his team, and 314th of 323 among MLB pitchers with 20+ innings. Stripping out defence, his 6.43 FIP suggests he pitched better than his ERA shows. He missed bats on 28.0% of swings (13.7% of every pitch he threw), walked 14.2% of the batters he faced and struck out 21.7%. His -0.4 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, 2020.
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 17 | 0 | 25.2 | 2 | 4 | 0 | 28 | 23 | 26 | 17 | 8.06 | 6.43 | 1.75 | 9.1 | 6.0 | 181 | 144 | -0.4 | — |
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 | 50 | 42 | 10 | 3 | 6 | 9 | .238 | .340 | .595 | .386 | 18.0% |
| vs RHB | 70 | 57 | 18 | 3 | 11 | 17 | .316 | .429 | .526 | .413 | 24.3% |
Pitch sequencing
What Shun Yamaguchi throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Shun Yamaguchi throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2020.
| Four-Seam Fastball | 205 | 90.8 | 2,129 | 50.7% | 25.3% | |
| Splitter | 198 | 84.8 | 1,261 | 42.4% | 27.7% | |
| Slider | 86 | 81.6 | 2,290 | 45.3% | 35.1% | |
| Curveball | 12 | 71.3 | 2,479 | 8.3% | 50.0% |
Head to head
Put Shun Yamaguchi beside up to three others.
Similar players
Nearest 2020 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.



