Players / Player profile
ATH · 2B

Donovan Walton

Age 32 B/T L/R 5′9″, 190 lb USA MLB debut 2019
40-man
  • The Athletics’ roster as it stands part-time 2B · 336 PA (2B 336) · 0.4 WAR in the role
  • Trade read Available at a price: ATH sits near the seller line (27% playoff odds, within a projected win of 30%); control through 2030.
xwOBA .324 wOBA .354
2026 fWAR 1.0
Projected 2027 WAR 0.3 at 335 PA · 0.4 in his 2027 role

Hitting · 2026

267 PA: percentiles need 300+, so values only

xwOBA .324 xwOBA: .324
Swing decisions +1.02 Swing decisions: +1.02
Contact value −1.02 Contact value: −1.02
Bat speed 67.8 Bat speed: 67.8
Squared-up / swing 25% Squared-up / swing: 25%
Blasts / swing 4% Blasts / swing: 4%
EV90 99.8 EV90: 99.8
Barrel % 4.8% Barrel %: 4.8%
Chase % 28.8% Chase %: 28.8%
Zone contact 82.9% Zone contact: 82.9%
Strikeout % 17.2% Strikeout %: 17.2%
Walk % 10.5% Walk %: 10.5%

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP20.222.24310%5%42%−0.43−3.53
RHP247.363.33018%11%28%+1.11−0.89
Attack angle
13.3° (51% in 5–20°)
Attack direction
−5.9°
Swing length
6.9 ft
Fast-swing rate
1%
Pull-air %
21.5%
Hard-hit %
31.7%
Slash · wRC+
.261/.358/.448 · 124

Zone map · 2026

Where he does damage, and where to pitch him

−0.9+0.8+0.2+0.8+0.6−0.1+3.6+2.4+1.7+0.4−0.8−0.6+2.0−0.2+0.8−0.1+0.4−1.5−2.6+0.2−0.1−0.3+0.3+0.2+0.4LHB

Does the most damage up and away (+3.6 vs. league per 100; 1.6 standard errors on 45 pitches, inside the noise for the best of nine cells).

Weakest down and in (−2.6), but only 1.1 standard errors from average on 52 pitches: no in-zone spot to attack yet.

Runs per 100 pitches vs. an average LHB: better · worse. Catcher’s view · 936 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 Walton: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
65Chase Meidroth CWS · ’01.3054.53.0Pre-arb
64Nick Sogard BOS · ’97.3151.20.9Pre-arb
58Austin Hedges CLE · ’92.2901.00.5Free agent
56Tristan Peters CWS · ’00.3173.52.4Pre-arb
55Travis Bazzana CLE · ’02.3002.82.4Pre-arb

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
2B −7.9 −5.4
SS −13.8 −9.3
3B −10.3 −10.8
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
20263B−2−1−0.1−1.1453
2026SS00−0.1−0.1467
20262B−8−6−0.4−6.41,532
20252B−1−10.0−1.077
20242B−2−2−0.6−2.6259

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 2B)
2025 · 2B2026 · 2B In (charging) 0−1Back 0−1Toward 3B line −1−4Toward 1B line 0−3vs. RHH 0−9vs. LHH −10

At 2B in 2026, the biggest loss came toward 3B line (−4 outs): a coaching target.

Tools (percentile; arm among 2Bs)
Arm at 2B 76.1 mph · 34th
Sprint speed 26.4 ft/s · 26th
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
20262B130+4.1

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 0.3 WAR Pre-arb $780K*
2028 −0.1 WAR Arbitration $1.9M*
2029 −0.5 WAR Arbitration $1.9M*
2030 −0.9 WAR Arbitration $1.9M*

* projected arbitration or minimum salary. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevelLevelTeamAgeGPA / IPPA / IP ·Line
2026AAAAAASalt Lake Bees3243168 PA 168 PA · .282/.429/.481 · 7 HR · 12.5% K · 19.0% BB
2025AAAAAALehigh Valley IronPigs31123504 PA 504 PA · .270/.356/.396 · 13 HR · 13.3% K · 10.9% BB
2025AAAAAASyracuse Mets3111 IP 1 IP · 36.00 ERA · 0.0% K · 0.0% BB

ABS challenges · 2026

Baseball Savant

As batter 50% 3/6 won · +0.1 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.