Players / Player profile
TB · 2B

Ben Williamson

Age 25 B/T R/R 6′0″, 210 lb USA MLB debut 2025
40-man
  • Tampa Bay’s roster as it stands on the 40-man, off the 26-man (call-up depth)
  • Injured list 2026: Right hamstring strain (Aug 7–Sep 20)
  • PNC Park Pittsburgh’s home park: +0.2 runs per 600 PA against an average park (+0.01 wins over 373 PA; his WAR leaves this out); home runs ×0.74 (×0.77 for right-handed hitters as a group). Park Fit →
xwOBA .289 wOBA .290
2026 fWAR 0.2
Projected 2027 WAR 0.5 Keystone Marcel+ at 373 PA

Hitting · 2026

286 PA: percentiles need 300+, so values only

xwOBA .289 xwOBA: .289
Swing decisions −1.53 Swing decisions: −1.53
Contact value +0.31 Contact value: +0.31
Bat speed 69.3 Bat speed: 69.3
Squared-up / swing 26% Squared-up / swing: 26%
Blasts / swing 7% Blasts / swing: 7%
EV90 102.5 EV90: 102.5
Barrel % 1.9% Barrel %: 1.9%
Chase % 31.8% Chase %: 31.8%
Zone contact 90.1% Zone contact: 90.1%
Strikeout % 18.5% Strikeout %: 18.5%
Walk % 7.7% Walk %: 7.7%

Platoon splits · swing path

By pitcher handedness

vsPAwOBAxwOBAK%BB%ChaseDecisionsContact
LHP133.280.28319%5%34%−1.85+0.82
RHP153.299.29318%10%30%−1.23−0.11
Attack angle
2.7° (36% in 5–20°)
Attack direction
+4.8°
Swing length
6.9 ft
Fast-swing rate
11%
Pull-air %
11.1%
Hard-hit %
33.5%
Slash · wRC+
.237/.302/.318 · 76

Zone map · 2026

Where he does damage, and where to pitch him

−1.0−0.7+0.4−0.8−0.7+1.8−1.2+1.9+0.2−2.2+3.1−1.3−2.2−1.2−0.9−1.0−0.4−1.2−2.8−1.3−0.6+1.0+1.3+0.2−0.4RHB

Does the most damage up over the middle (+1.9 vs. league per 100; 0.8 standard errors on 44 pitches, inside the noise for the best of nine cells).

Weakest down and away (−2.8), but only 1.2 standard errors from average on 64 pitches: no in-zone spot to attack yet.

Runs per 100 pitches vs. an average RHB: better · worse. Catcher’s view · 1,002 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 Williamson: bat path, contact quality and approach

SimilarityPlayerxwOBA’26 WAR’27 proj2027
65Alejandro Osuna TEX · ’02.308−0.40.1—
63Justin Crawford PHI · ’04.2890.20.7Pre-arb
60Tyler Freeman COL · ’99.313−1.1−0.6Free agent
59Edgar Quero CWS · ’03.283−0.50.2—
58Kyle Isbel KC · ’97.2630.10.6Arb

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
3B −0.1 +2.4
2B −4.5 −2.0
SS −7.5 −3.0
1B +5.4prior −10.1
Outs Above Average by position
SeasonPosOAARangeArm, DPRunsBatters
20263B000.00.060
2026SS−2−1−0.1−1.1690
20262B−4−3−0.3−3.31,801
20253B00−0.2−0.22,999

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)
2026 · 2B In (charging) −4Back +2Toward 3B line 0Toward 1B line −2vs. RHH −3vs. LHH −2

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

Tools (percentile; arm among 3Bs)
Arm at 3B 83.6 mph · 61st
Sprint speed 28.1 ft/s · 70th
Zone rating (Keystone expected outs)
SeasonZoneBallsOuts vs. exp.
2026SS52+3.9
20262B162+5.4
20253B209+11.3

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 0.5 WAR —
2028 0.5 WAR —
2029 0.4 WAR —
2030 0.2 WAR —

Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevelLevelTeamAgeGPA / IPPA / IP ·Line
2026AAAAAADurham Bulls2539 PA 9 PA · .111/.111/.222 · 0 HR · 44.4% K · 0.0% BB
2025AAAAAATacoma Rainiers2452240 PA 240 PA · .314/.392/.462 · 5 HR · 13.3% K · 10.4% BB

ABS challenges · 2026

Baseball Savant

As batter 60% 3/5 won · −1.5 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.