Players / Player profile
KC · LF

Isaac Collins

Age 29 B/T S/R 5′8″, 188 lb USA MLB debut 2024
40-man
  • Kansas City’s roster as it stands starts at LF · 496 PA · 1.0 WAR in the role
  • Trade read Available at a price: KC 39% playoff odds; control through 2030.
xwOBA .298 wOBA .299
2026 fWAR 0.1
Projected 2027 WAR 1.0 at 504 PA · 1.0 in his 2027 role

Hitting · 2026 percentiles

vs. MLB hitters with 300+ PA · 521 PA

xwOBA .298 xwOBA: .298, 21st percentile
Swing decisions +0.48 Swing decisions: +0.48, 68th percentile
Contact value −2.08 Contact value: −2.08, 3rd percentile
Bat speed 73.3 Bat speed: 73.3, 68th percentile
Squared-up / swing 22% Squared-up / swing: 22%, 41st percentile
Blasts / swing 9% Blasts / swing: 9%, 72nd percentile
EV90 104.4 EV90: 104.4, 53rd percentile
Barrel % 5.2% Barrel %: 5.2%, 26th percentile
Chase % 22.0% Chase %: 22.0%, 92nd percentile
Zone contact 88.1% Zone contact: 88.1%, 74th percentile
Strikeout % 23.0% Strikeout %: 23.0%, 42nd percentile
Walk % 12.3% Walk %: 12.3%, 89th percentile

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP156.279.27921%8%28%−0.16−2.27
RHP365.308.30524%14%19%+0.75−1.98
Attack angle
3.6° (35% in 5–20°)
Attack direction
−4.6°
Swing length
6.7 ft
Fast-swing rate
30%
Pull-air %
16.2%
Hard-hit %
39.3%
Slash · wRC+
.213/.320/.321 · 83

Zone map · 2026

Where he does damage, and where to pitch him

+0.8+1.5+0.2+0.6−1.7+2.5+0.3−2.5−0.40.0+0.6+0.4−1.6−4.6+0.7+1.1−3.2+2.6−4.00.0−0.1−0.8+2.0+0.8−0.1LHB

Does the most damage down over the middle (+2.6 vs. league per 100; 1.2 standard errors on 78 pitches, inside the noise for the best of nine cells).

Weakest middle-in (−4.6), but only 2.0 standard errors from average on 65 pitches: no in-zone spot to attack yet.

Runs per 100 pitches vs. an average LHB: better · worse. Catcher’s view · 1,354 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 Collins: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
58Lane Thomas ATL · ’95.3120.70.2Free agent
52Curtis Mead BOS · ’00.3611.50.9Pre-arb
50Kyle Karros COL · ’02.3312.01.6Pre-arb
45Masyn Winn STL · ’02.2942.32.8Arb
45Carson Benge NYM · ’03.3434.33.3Pre-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
LF +1.2 −6.3
RF −2.8prior −13.3
1B +1.7prior −13.8
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
20262B000.00.079
2026LF−2−2+2.00.04,754
20253B000.00.07
2025RF−2−2−0.1−2.1234
2025LF+6+5−2.2+2.83,413
20242B−100.00.025
2024LF00+0.3+0.3134

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 LF)
2025 · LF2026 · LF In (charging) +2−1Back −10Toward 3B line +1−1Toward 1B line +10vs. RHH −1+1vs. LHH +5−3
Tools (percentile; arm among LFs)
Arm at LF 84.1 mph · 33rd
Sprint speed 27.6 ft/s · 55th
Reaction +1.6 ft · 88th
Burst +0.3 ft · 58th
Route −2.0 ft · 4th
Catch difficulty (latest season)
PlayMadeChancesRate
★★★★★0280%
★★★★2729%
★★★91369%
★★101471%
★272993%
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
2026LF501+3.1
2025LF314+5.5

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 1.0 WAR Pre-arb $780K*
2028 0.6 WAR Arbitration $1.9M*
2029 0.2 WAR Arbitration $3.6M*
2030 −0.3 WAR Arbitration $4.4M*

* projected arbitration or minimum salary. Contract Studio →

ABS challenges · 2026

Baseball Savant

As batter 39% 12/31 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.