Players / Player profile
MIL · 1B

Andrew Vaughn

Age 28 B/T R/R 5′10″, 215 lb USA MLB debut 2021
40-man
  • Milwaukee’s roster as it stands starts at 1B · 407 PA · 0.6 WAR in the role
  • Injured list 2026: Illness (Sep 25–Oct 2)
  • Trade read Available at a price: MIL 81% playoff odds; control through 2027.
xwOBA .329 wOBA .375
2026 fWAR 1.6
Projected 2027 WAR 0.6 at 410 PA · 0.6 in his 2027 role

Hitting · 2026 percentiles

vs. MLB hitters with 300+ PA · 331 PA

xwOBA .329 xwOBA: .329, 61st percentile
Swing decisions +0.51 Swing decisions: +0.51, 71st percentile
Contact value +0.91 Contact value: +0.91, 74th percentile
Bat speed 70.5 Bat speed: 70.5, 28th percentile
Squared-up / swing 31% Squared-up / swing: 31%, 94th percentile
Blasts / swing 7% Blasts / swing: 7%, 39th percentile
EV90 102.9 EV90: 102.9, 32nd percentile
Barrel % 5.1% Barrel %: 5.1%, 25th percentile
Chase % 23.5% Chase %: 23.5%, 86th percentile
Zone contact 87.8% Zone contact: 87.8%, 72nd percentile
Strikeout % 16.0% Strikeout %: 16.0%, 81st percentile
Walk % 10.0% Walk %: 10.0%, 65th percentile

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP132.407.34914%11%21%+0.05+1.68
RHP199.354.31518%9%25%+0.82+0.50
Attack angle
7.8° (51% in 5–20°)
Attack direction
−2.2°
Swing length
7.2 ft
Fast-swing rate
12%
Pull-air %
13.5%
Hard-hit %
43.5%
Slash · wRC+
.306/.390/.444 · 134

Zone map · 2026

Where he does damage, and where to pitch him

−1.1+1.4+2.0+1.7+0.1+0.7+2.0−1.3+1.4+0.2+1.0−2.6+2.4−2.1−0.1+2.3+2.8−0.8+1.9+0.7−0.4+0.6+1.6−0.4+0.6RHB

Does the most damage down and in (+2.8 vs. league per 100; 1.2 standard errors on 48 pitches, inside the noise for the best of nine cells).

Weakest middle-in (−2.6), but only 1.1 standard errors from average on 59 pitches: no in-zone spot to attack yet.

Runs per 100 pitches vs. an average RHB: better · worse. Catcher’s view · 1,230 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 Vaughn: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
65Bryson Stott PHI · ’97.3323.82.5Arb
65Adley Rutschman BOS · ’98.3273.01.9Arb
64Masataka Yoshida BOS · ’93.3180.40.1Signed $18.6M
63Victor Caratini MIN · ’93.3050.70.7Signed $6.5M
62Carson Kelly CHC · ’94.3101.61.7Free agent

Carson Kelly (similarity 62, 1.7 WAR projected for 2027) is a free agent this winter: a similar swing available without trading talent, at a free agent’s price. Opportunity Finder →

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
1B −2.9 −15.4
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
20263B000.00.0230
20261B−4−3−3.3−6.32,222
20251B+2+2+4.0+6.03,243
20241B−9−6−1.5−7.54,612
20231B−7−5+1.2−3.85,433

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 at 1B)
2025 · 1B2026 · 1B In (charging) +30Back 0−2Toward 3B line −3−3Toward 1B line +20vs. RHH +3−2vs. LHH −1−2

At 1B in 2026, the biggest loss came toward 3B line (−3 outs): a coaching target.

Tools (percentile; arm among 1Bs)
Arm at 1B 71.9 mph · 25th
Sprint speed 25.8 ft/s · 14th
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
20261B123−2.9
20251B181−0.1
20241B255+2.4

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 0.6 WAR Arbitration $7.7M*
2028 0.4 WAR Free agent
2029 0.0 WAR Free agent
2030 −0.4 WAR Free agent

* projected arbitration or minimum salary. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevelLevelTeamAgeGPA / IPPA / IP ·Line
2026AAAAAANashville Sounds28312 PA 12 PA · .182/.250/.273 · 0 HR · 16.7% K · 8.3% BB
2025AAAAAANashville Sounds2731132 PA 132 PA · .235/.333/.426 · 5 HR · 17.4% K · 12.9% BB
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.