Players / Player profile
COL · 2B

Willi Castro

Age 29 B/T S/R 6′0″, 209 lb Puerto Rico MLB debut 2019
40-man
  • Colorado’s roster as it stands starts at 2B · 477 PA · 1.1 WAR in the role
  • Injured list 2026: Left heel inflammation (Sep 5–Sep 28)
  • Trade read Unlikely to be traded: Signed in Jan 2026 (2 yr, $12.8M (2026-27)): clubs rarely move a player they just committed to.
xwOBA .312 wOBA .332
2026 fWAR 0.7
Projected 2027 WAR 0.9 at 484 PA · 1.1 in his 2027 role

Hitting · 2026 percentiles

vs. MLB hitters with 300+ PA · 481 PA

xwOBA .312 xwOBA: .312, 39th percentile
Swing decisions −0.60 Swing decisions: −0.60, 23rd percentile
Contact value −0.12 Contact value: −0.12, 42nd percentile
Bat speed 72.8 Bat speed: 72.8, 60th percentile
Squared-up / swing 16% Squared-up / swing: 16%, 5th percentile
Blasts / swing 7% Blasts / swing: 7%, 35th percentile
EV90 105.6 EV90: 105.6, 70th percentile
Barrel % 8.0% Barrel %: 8.0%, 53rd percentile
Chase % 37.8% Chase %: 37.8%, 12th percentile
Zone contact 81.1% Zone contact: 81.1%, 25th percentile
Strikeout % 26.8% Strikeout %: 26.8%, 17th percentile
Walk % 8.3% Walk %: 8.3%, 44th percentile

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP167.316.24226%4%46%−1.31−1.83
RHP314.340.34927%11%34%−0.24+0.91
Attack angle
9.3° (46% in 5–20°)
Attack direction
−3.8°
Swing length
7.3 ft
Fast-swing rate
25%
Pull-air %
23.0%
Hard-hit %
40.1%
Slash · wRC+
.260/.331/.417 · 95

Zone map · 2026

Where he does damage, and where to pitch him

−0.7−0.8+2.6+0.5+0.90.0−2.30.0−1.2−0.6−2.5+3.0+6.2−4.9−0.8+0.4+1.8−0.8−0.5+0.9−0.4−0.5−1.3−2.0+0.1LHB

Does the most damage middle-middle (+6.2 vs. league per 100; 2.9 standard errors on 86 pitches, inside the noise for the best of nine cells).

Weakest middle-in (−4.9; 2.1 standard errors below average on 28 pitches). Pitchers should attack here.

Runs per 100 pitches vs. an average LHB: better · worse. Catcher’s view · 1,162 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 Castro: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
60Cole Carrigg COL · ’02.3161.71.6Pre-arb
57Max Muncy ATH · ’02.287−0.3−0.1—
57Henry Davis PIT · ’99.2980.60.2Arb
55Jeremy Peña HOU · ’97.3263.43.2Arb
54Ty France SD · ’94.3283.61.0Free agent

Ty France (similarity 54, 1.0 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
2B −1.2 +1.3
SS −7.3 −2.8
3B −6.3 −3.8
CF −4.7 −5.2
RF +1.5 −6.0
LF +0.5 −7.0
1B +4.5prior −11.0
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
2026LF−1−10.0−1.0108
20261B+10+0.3+0.3248
2026SS−2−20.0−2.0652
20263B−5−30.0−3.01,356
20262B000.00.01,959
2025SS−2−10.0−1.0106
2025CF000.00.0137
20253B−4−30.0−3.0537
2025RF00−0.1−0.11,062
2025LF00−0.1−0.11,088
20252B−3−2−0.1−2.11,168
20243B+1+10.0+1.0592
2024CF−4−30.0−3.0899
2024LF00+0.1+0.1990
20242B00+0.1+0.11,197
2024SS+3+2+0.1+2.11,959
2023RF−1−10.0−1.087
2023SS+1+10.0+1.0108
20232B+1+1+0.1+1.1175
20233B+2+1+0.3+1.3953
2023CF00+0.4+0.41,081
2023LF00+0.4+0.41,190

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+2Back 0−4Toward 3B line −4+2Toward 1B line −5−7vs. RHH −4−7vs. LHH −50

At 2B in 2026, the biggest loss came toward 1B line (−7 outs): a coaching target.

Tools (percentile; arm among 2Bs)
Arm at 2B 84.0 mph · 94th
Sprint speed 28.1 ft/s · 70th
Reaction −0.3 ft · 49th
Burst −1.0 ft · 24th
Route +0.5 ft · 80th
Catch difficulty (latest season)
PlayMadeChancesRate
★★★★★010%
★★★★00—
★★★00—
★★00—
★00—
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
2026SS59+0.8
20263B112+3.0
20262B184+5.0
2025RF103+1.8
2025LF116+1.8
20252B84+0.1
2024SS178−6.4
2024LF104−5.3
2024CF104−4.2
20242B99−3.1

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 0.9 WAR Guaranteed $7.3M
2028 0.5 WAR Free agent
2029 0.0 WAR Free agent
2030 −0.6 WAR Free agent

Contract Studio →

ABS challenges · 2026

Baseball Savant

As batter 25% 6/24 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.