1B · 2021
Hernán Pérez
- Age
- 30
- B/T
- R/R
- Height
- 6' 0"
- Weight
- 213 lb
- Number
- #4
- Born
- March 26, 1991 in Villa de Cura, Aragua, Venezuela
- MLB debut
- June 9, 2012
- dbWAR
- 1.3 11 season(s)
- PA
- 21
- AVG
- .053
- OBP
- .143
- SLG
- .053
- wRC+
- -44 100 = avg
Hernán Pérez is a first baseman for the Washington Nationals. In 2021 he hit 0 home runs and knocked in 0 RBIs, notching 1 hit across 21 plate appearances in 10 games. His batting average was .053, 78.4% lower than the league average of .244. He reached base at a .143 clip and slugged .053, for an OPS of .195, 73.1% lower than the league mark of .728. He averaged 86.3 mph off the bat, hit 33.3% of balls in play at 95 mph or better and made contact on 59.6% of his swings. Adjusted for his ballpark and league, his -44 wRC+ puts his offence 144% below average. That comes to -0.3 dbWAR — -3.6 runs with the bat, -0.0 on the bases, -0.3 for the position he plays, against replacement level. It includes no fielding: defensive runs are proprietary and are not estimated here, so the figure credits playing a demanding position but not playing it well.
League context
Percentile among qualified batters, 2021.
How the WAR is built
Runs above replacement, 2021. These four terms sum to -3.2 runs, divided by runs-per-win to give WAR.
WAR by season
Batting
Standard and advanced, by season.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 10 | 21 | 1 | 0 | 0 | 0 | 2 | 10 | .053 | .143 | .053 | .000 | .111 | 9.5% | 47.6% | .111 | -3.6 | -44 | -0.3 | |
| 2020 | 3 | 6 | 1 | 0 | 0 | 0 | 0 | 2 | .167 | .167 | .167 | .000 | .250 | 0.0% | 33.3% | .148 | -0.9 | -19 | -0.1 | |
| 2019 | 86 | 246 | 53 | 8 | 18 | 5 | 11 | 66 | .228 | .262 | .379 | .151 | .283 | 4.5% | 26.8% | .272 | -10.6 | 66 | -0.1 | |
| 2018 | 119 | 334 | 80 | 9 | 29 | 11 | 17 | 71 | .253 | .290 | .386 | .133 | .300 | 5.1% | 21.3% | .295 | -6.4 | 83 | 0.5 | |
| 2017 | 128 | 458 | 112 | 14 | 51 | 13 | 20 | 79 | .259 | .289 | .414 | .155 | .286 | 4.4% | 17.2% | .301 | -9.1 | 82 | 0.4 | |
| 2016 | 123 | 430 | 110 | 13 | 56 | 34 | 18 | 94 | .272 | .302 | .428 | .156 | .322 | 4.2% | 21.9% | .315 | -2.2 | 96 | 1.5 | |
| 2015 | 100 | 272 | 64 | 1 | 21 | 5 | 5 | 59 | .243 | .257 | .327 | .084 | .309 | 1.8% | 21.7% | .253 | -13.7 | 54 | -0.4 |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 2 | 0 | 2.0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0.00 | 1.17 | 0.50 | 9.0 | 0.0 | 0 | 27 | 0.1 | |
| 2019 | 3 | 0 | 3.0 | 0 | 0 | 0 | 2 | 1 | 1 | 2 | 3.00 | 8.88 | 1.33 | 3.0 | 6.0 | 67 | 197 | -0.1 | |
| 2018 | 3 | 0 | 3.1 | 0 | 0 | 0 | 7 | 5 | 2 | 1 | 13.50 | 7.66 | 2.40 | 5.4 | 2.7 | 325 | 185 | -0.1 | |
| 2017 | 1 | 0 | 1.0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.00 | 6.16 | 2.00 | 0.0 | 9.0 | 0 | 141 | -0.0 |
Platoon splits
How he hits left- and right-handed pitching.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHP | 14 | 12 | 1 | 0 | 2 | 6 | .083 | .214 | .083 | .166 | 42.9% |
| vs RHP | 7 | 7 | 0 | 0 | 0 | 4 | .000 | .000 | .000 | .000 | 57.1% |
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 4 | 4 | 1 | 0 | 0 | 1 | .250 | .250 | .750 | .401 | 25.0% |
| vs RHB | 3 | 3 | 0 | 0 | 0 | 1 | .000 | .000 | .000 | .000 | 33.3% |
Spray chart
Where every ball he put in play landed, 2021.
Loading 9 batted balls…
Contact quality
How hard and at what angle he hits it, over 9 tracked batted balls in 2021. Percentiles are against qualified batters.
- Barrel rate
- 0.0% 0 barrels
- Exit velocity
- 86.3 mph average
- Max exit velo
- 106.4 mph, hardest hit
- Hard hit
- 33.3% 95 mph or better
- Sweet spot
- 22.2% 8–32° launch
- Launch angle
- 2.4° average
A barrel is a batted ball whose exit velocity and launch angle have historically produced at least a .500 average and 1.500 slugging — 98 mph within 26–30°, widening to 8–50° by 116 mph. Reconstructed from Statcast's published anchor points, which reproduces them exactly; the interior is within a degree. Sweet spot (8–32°) is an exact definition.
Hot and cold zones
Batting average by pitch location, 2021.
Situational hitting
How Hernán Pérez hits by base state, outs, score and late-game pressure — each read against his own season line.
| Situation | PA | AB | H | HR | RBI | BB | SO | AVG | OBP | SLG | wOBA |
|---|---|---|---|---|---|---|---|---|---|---|---|
| All situations | 21 | — | — | — | — | — | — | .053 | .143 | .053 | .111 |
| Bases empty · thin | 15 | 14 | 1 | 0 | 0 | 1 | 8 | .071 | .133 | .071 | .107 |
| Runner on first · thin | 3 | 3 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | .000 | .000 |
| Runners on · thin | 6 | 5 | 0 | 0 | 0 | 1 | 2 | .000 | .167 | .000 | .121 |
| RISP · thin | 3 | 2 | 0 | 0 | 0 | 1 | 1 | .000 | .333 | .000 | .242 |
Runners on includes runners in scoring position, which is the convention every reference uses. Rows under 25 plate appearances are marked thin — at that size a rate moves several dozen points on one hit. Counted from play-by-play, 2021.
Pitch sequencing
What Hernán Pérez throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Hernán Pérez throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2021.
| Fastball | 12 | 64.2 | 1,553 | 50.0% | 33.3% |
Head to head
Put Hernán Pérez 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.