Players / Player profile
MIL · C

William Contreras

Age 28 B/T R/R 5′10″, 217 lb Venezuela MLB debut 2020
40-man
  • Milwaukee’s roster as it stands starts at C · 553 PA · 3.6 WAR in the role
  • Trade read Unlikely to be traded: MIL expects to contend (81% playoff odds) and he’s a regular.His 2027 is a $14.5M club option MIL decides about five days after the World Series: exercised, he’s a trade target; declined, he still has under six years of service (about 5 years, 112 days after 2026), so he goes to arbitration and stays MIL’s unless he’s non-tendered by Nov 20.
xwOBA .334 wOBA .344
2026 fWAR 3.0
Projected 2027 WAR 3.0 at 586 PA · 3.6 in his 2027 role

Hitting · 2026 percentiles

vs. MLB hitters with 300+ PA · 633 PA

xwOBA .334 xwOBA: .334, 69th percentile
Swing decisions +0.37 Swing decisions: +0.37, 62nd percentile
Contact value +0.58 Contact value: +0.58, 67th percentile
Bat speed 73.5 Bat speed: 73.5, 70th percentile
Squared-up / swing 27% Squared-up / swing: 27%, 82nd percentile
Blasts / swing 12% Blasts / swing: 12%, 94th percentile
EV90 105.8 EV90: 105.8, 74th percentile
Barrel % 8.5% Barrel %: 8.5%, 56th percentile
Chase % 28.4% Chase %: 28.4%, 59th percentile
Zone contact 87.1% Zone contact: 87.1%, 68th percentile
Strikeout % 14.8% Strikeout %: 14.8%, 83rd percentile
Walk % 8.7% Walk %: 8.7%, 50th percentile

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP179.344.31416%10%28%+0.53−1.08
RHP454.344.34214%8%29%+0.30+1.28
Attack angle
8.7° (59% in 5–20°)
Attack direction
−0.1°
Swing length
7.2 ft
Fast-swing rate
34%
Pull-air %
14.2%
Hard-hit %
44.0%
Slash · wRC+
.270/.341/.417 · 109

Zone map · 2026

Where he does damage, and where to pitch him

+0.5−3.5+0.7−2.1−0.9−3.30.0−1.6−1.6+0.3+2.4+1.4+2.1+0.5−0.3−2.6+5.9+0.3+1.8−0.5+2.0+1.0−0.5+2.6+1.2RHB

Does the most damage down and in (+5.9 vs. league per 100; 2.7 standard errors on 82 pitches, inside the noise for the best of nine cells).

Weakest up over the middle (−1.6), but only 0.8 standard errors from average on 97 pitches: no in-zone spot to attack yet.

Runs per 100 pitches vs. an average RHB: better · worse. Catcher’s view · 2,048 pitches · faded cells are within one standard error of average. A spot is called only when it is farther from average than the best or worst of nine average cells gets 95% of the time (set from the league’s own pitches: about 3 standard errors above, 2 below).

Most similar hitters

Swings like Contreras: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
62Jared Young NYM · ’95.3181.00.6Pre-arb
59Ryan Jeffers MIN · ’97.3442.61.8Free agent
59Gabriel Moreno AZ · ’00.3655.44.0Arb
57Bobby Witt Jr. KC · ’00.3817.06.6Signed $19.7M
54Ketel Marte AZ · ’93.3482.53.1Signed $12.0M

Nearest neighbours on bat speed, swing length, attack angle, squared-up and blast rates, EV90, barrels, pull-air, chase, zone contact, K% and BB%. 2026 regulars only.

Fielding

2027 rating at every position he can play · OAA by position · range by direction · tools. Same engine as the Fielding Lab and the Winter Plan.

2027 rating by position · best fit first, on the total with the position’s worth
C +0.4 +12.9
1B −2.0prior −17.5
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
No MLB fielding yet.

Runs = range plus his arm and double-play runs spread over his positions by outs (Fielding Run Value, from 2023): what the rating counts.

Range by direction (OAA)

No directional data (needs a qualified season at one position).

Tools (percentile among MLB fielders)
Arm strength —
Sprint speed 26.0 ft/s · 17th
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
Too few balls in his zone.

The zone rating counts every ball hit to his part of the field while he played there, his club’s positioning included; Savant OAA uses his actual starting spot and is the better individual grade. They agree best in the outfield. See the model card.

Compare in the Fielding Lab →

Contract & projection

Club control (RosterResource) · Keystone projected WAR

2027 3.0 WAR Club option $14.5M
2028 2.7 WAR Free agent
2029 2.2 WAR Free agent
2030 1.6 WAR Free agent

Contract Studio →

ABS challenges · 2026

Baseball Savant

As batter 60% 6/10 won · +0.2 runs
As catcher 57% 105/185 won · +1.9 runs
Keystone is an independent portfolio project. It is not affiliated with Major League Baseball or any club. Data: MLB Stats API, Baseball Savant, FanGraphs. Used under their terms for individual, non-commercial use.