Players / Player profile
ATL · RF

Ronald Acuña Jr.

Age 28 B/T R/R 6′0″, 205 lb Venezuela MLB debut 2018
40-man
  • Atlanta’s roster as it stands starts at DH · 470 PA · 2.0 WAR in the role
  • Injured list 2026: Strained left hamstring (Jun 10–Jul 27)
  • Trade read Unlikely to be traded: A franchise player: with ATL every season since at least 2022 (MLB debut 2018) and still a 2.2-WAR projection.His 2027 is a $17.0M club option ATL decides about five days after the World Series: exercised, he’s a trade target; declined, he’s a free agent who costs only money.
xwOBA .366 wOBA .356
2026 fWAR 1.8
Projected 2027 WAR 2.2 at 476 PA · 2.0 in his 2027 role

Hitting · 2026 percentiles

vs. MLB hitters with 300+ PA · 468 PA

xwOBA .366 xwOBA: .366, 92nd percentile
Swing decisions +1.37 Swing decisions: +1.37, 95th percentile
Contact value +0.57 Contact value: +0.57, 66th percentile
Bat speed 75.7 Bat speed: 75.7, 91st percentile
Squared-up / swing 17% Squared-up / swing: 17%, 10th percentile
Blasts / swing 10% Blasts / swing: 10%, 80th percentile
EV90 107.0 EV90: 107.0, 85th percentile
Barrel % 13.0% Barrel %: 13.0%, 88th percentile
Chase % 28.6% Chase %: 28.6%, 58th percentile
Zone contact 77.7% Zone contact: 77.7%, 8th percentile
Strikeout % 22.0% Strikeout %: 22.0%, 47th percentile
Walk % 10.9% Walk %: 10.9%, 81st percentile

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP144.330.34424%13%26%+1.97−1.05
RHP324.368.37621%10%30%+1.05+1.37
Attack angle
11.2° (55% in 5–20°)
Attack direction
+4.2°
Swing length
7.6 ft
Fast-swing rate
53%
Pull-air %
15.9%
Hard-hit %
43.5%
Slash · wRC+
.255/.345/.451 · 120

Zone map · 2026

Where he does damage, and where to pitch him

+2.3−1.0−1.3+2.7+0.9−0.6−2.2−2.8+2.0+0.7+1.1+0.1−2.9+1.2+0.9−0.60.0+4.7+3.5−1.3−0.2+3.9+1.5+0.1+0.6RHB

Does the most damage down over the middle (+4.7 vs. league per 100; 2.2 standard errors on 91 pitches, inside the noise for the best of nine cells).

Weakest middle-middle (−2.9), but only 1.4 standard errors from average on 117 pitches: no in-zone spot to attack yet.

Runs per 100 pitches vs. an average RHB: better · worse. Catcher’s view · 1,679 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 Acuña: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
69Brett Baty NYM · ’99.3221.11.5Arb
66Corbin Carroll AZ · ’00.3424.24.4Signed $12.6M
60Matt Olson ATL · ’94.3514.02.5Signed $22.0M
59Cam Smith HOU · ’03.3181.41.5Pre-arb
59Andrés Chaparro WSH · ’99.3421.00.5Pre-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
RF −7.2 −14.7
LF −9.2prior −19.7
1B −6.7prior −22.2
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
2026RF−10−9+2.1−6.93,336
2025RF−11−10+1.2−8.83,359
2024RF−3−2+1.6−0.41,774
2023RF−7−6+4.7−1.35,770

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 RF)
2025 · RF2026 · RF In (charging) −4−1Back −1−1Toward 3B line −3−4Toward 1B line −3−3vs. RHH −5−4vs. LHH −6−6

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

Tools (percentile; arm among RFs)
Arm at RF 94.9 mph · 95th
Sprint speed 27.2 ft/s · 46th
Reaction −1.5 ft · 6th
Burst −1.5 ft · 11th
Route +0.7 ft · 87th
Catch difficulty (latest season)
PlayMadeChancesRate
★★★★★0130%
★★★★2825%
★★★41233%
★★101856%
★252889%
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
2026RF371+0.1
2025RF308−15.4
2024RF161−5.1

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 2.2 WAR Club option $17.0M
2028 1.9 WAR Club option $17.0M
2029 1.5 WAR Free agent
2030 1.1 WAR Free agent

Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevelLevelTeamAgeGPA / IPPA / IP ·Line
2026AAAAAAGwinnett Stripers28624 PA 24 PA · .263/.375/.263 · 0 HR · 16.7% K · 16.7% BB
2026ROKROKFCL Braves2839 PA 9 PA · .143/.333/.571 · 1 HR · 22.2% K · 22.2% BB
2025AAAAAAGwinnett Stripers27519 PA 19 PA · .417/.632/.833 · 1 HR · 10.5% K · 36.8% BB
2025ROKROKFCL Braves2713 PA 3 PA · .333/.333/1.333 · 1 HR · 0.0% K · 0.0% BB

ABS challenges · 2026

Baseball Savant

As batter 52% 13/25 won · +0.8 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.