Players · D · Pitcher · 2020
Jairo Díaz
- Age
- 29
- B/T
- R/R
- Height
- 6' 0"
- Weight
- 254 lb
- Number
- #47
- Born
- May 27, 1991 in Puerto La Cruz, Venezuela
- MLB debut
- September 8, 2014
- dbWAR
- .9 4 season(s)
- IP
- 20.0
- ERA
- 7.65
- FIP
- 6.64
- K/9
- 7.7
- FIP−
- 149 100 = avg
Jairo Díaz was a relief pitcher for the Colorado Rockies. In 2020 he struck out 17 batters over 20.0 innings across 24 appearances, going 1-2. His ERA of 7.65 was 71.8% higher than the league average of 4.45 — the second worst on his team, and 309th of 323 among MLB pitchers with 20+ innings. Stripping out defence, his 6.64 FIP suggests he pitched better than his ERA shows. He missed bats on 23.5% of swings (10.7% of every pitch he threw), walked 13.2% of the batters he faced and struck out 16.0%. 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, 2020.
WAR by season
Pitching
Standard and advanced, by season.
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 | 41 | 13 | 4 | 6 | 9 | .317 | .396 | .683 | .441 | 18.0% |
| vs RHB | 56 | 44 | 18 | 0 | 8 | 8 | .409 | .518 | .545 | .461 | 14.3% |
Pitch sequencing
What Jairo Díaz throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Jairo Díaz throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Slider | 153 | 85.2 | 2,350 | 44.4% | 31.4% | 32 | .375 | 1.054 | |
| Sinker | 131 | 95.0 | 2,112 | 36.6% | 18.0% | 32 | .313 | .946 | |
| Four-Seam Fastball | 80 | 95.2 | 2,169 | 35.0% | 17.1% | 21 | .429 | 1.270 |
Head to head
Put Jairo Díaz 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.