DataBaseball
2026
Buster Posey headshot

C · 2021

Buster Posey

Age
34
B/T
R/R
Height
6' 1"
Weight
213 lb
Born
March 27, 1987 in Leesburg, GA, USA
MLB debut
September 11, 2009
dbWAR
22.4
6 season(s)
PA
454
AVG
.304
OBP
.390
SLG
.499
wRC+
146
100 = avg

Buster Posey is a catcher for the San Francisco Giants. In 2021 he hit 18 home runs and knocked in 56 RBIs, notching 120 hits across 454 plate appearances in 113 games. His batting average was .304, 24.6% higher than the league average of .244. He reached base at a .390 clip and slugged .499, for an OPS of .889, 22.1% higher than the league mark of .728 — 4th of 17 on his team, and 35th of 463 among MLB batters with 100+ plate appearances. He averaged 88.5 mph off the bat, hit 39.4% of balls in play at 95 mph or better, barrelled 8.1% of them and made contact on 76.1% of his swings. Adjusted for his ballpark and league, his 146 wRC+ puts his offence 46% above average. That comes to 4.8 dbWAR — +24.7 runs with the bat, -0.4 on the bases, +8.9 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.

wRC+146
wOBA.382
ISO.195
BB%12.3%
WAR4.8

How the WAR is built

Runs above replacement, 2021. These four terms sum to +48.3 runs, divided by runs-per-win to give WAR.

Batting+24.7Baserunning-0.4Position+8.9Replacement+15.1
BattingBaserunningPositionReplacement

WAR by season

5.32.70.0151617181921

Batting

Standard and advanced, by season.

Trend
2021113454120185605687.304.390.499.195.34912.3%19.2%.382+24.71464.8
201911344510473803471.257.320.368.111.2967.6%16.0%.300-8.6901.3
201810544811354134553.284.359.382.098.31610.0%11.8%.329+4.01072.5
2017140568158126766166.320.400.462.142.34710.7%11.6%.369+21.21374.3
2016145614155148066468.288.362.434.147.30310.4%11.1%.344+11.11154.1
2015150623177199525652.318.379.470.153.3209.0%8.3%.367+24.61425.3

Platoon splits

How he hits left- and right-handed pitching.

Batting by the hand the pitcher throws with, 2021. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHP1191063961222.368.429.623.43218.5%
vs RHP33528981124465.280.376.453.36519.4%

Spray chart

Where every ball he put in play landed, 2021.

Loading 310 batted balls…

Contact quality

How hard and at what angle he hits it, over 310 tracked batted balls in 2021. Percentiles are against qualified batters.

Barrel rate
8.1%
25 barrels
Exit velocity
88.5
mph average
Max exit velo
109.2
mph, hardest hit
Hard hit
39.4%
95 mph or better
Sweet spot
40.0%
8–32° launch
Launch angle
8.7°
average
Barrel rate8.1%
Exit velocity88.5 mph
Hard hit rate39.4%
Contact rate76.1%

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.

.364.000.417.098.41217 AB.11118 AB.33315 AB.56141 AB.34846 AB.23343 AB.17229 AB.39648 AB.25020 AB
Below averageLeague averageAbove average
Batting average by location of the pitch that ended each plate appearance, catcher's view. The bordered square is the strike zone; the outer band is chase territory. Cells with fewer than 8 at-bats are left grey rather than shown as signal. League average on the same attribution is .243.

Situational hitting

How Buster Posey hits by base state, outs, score and late-game pressure — each read against his own season line.

Split by
By who is on base when he comes up. The season line is repeated as the baseline.
SituationPAABHHRRBIBBSOAVGOBPSLGwOBA
All situations454.304.390.499.382
Bases empty2622337511132949.322.397.515.392
Runner on first9782234101419.280.392.463.378
Runners on192162457432738.278.380.475.368
RISP9580223331319.275.368.487.357

Runners on includes runners in scoring position, which is the convention every reference uses. Counted from play-by-play, 2021.

Head to head

Put Buster Posey beside up to three others.

Compare — add up to 3 more players
Buster Posey

Similar players

Nearest 2021 seasons by discipline, contact, power and speed, on rate statistics rather than totals.

How these are computed

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.