The Tampa Bay Rays have acquired slick fielding third baseman Ben Williamson from the Seattle Mariners as part of a three-team deal with the St. Louis Cardinals that will generally be known as the Donovan trade:
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Mariners receive: INF Brendan Donovan
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Cardinals receive: RHP Jurrangelo Cijntje, CF Tai Peete, OF Colton Ledbetter and two 2026 competitive-balance Round B picks (No. 68 from Seattle, No. 72 from Tampa Bay)
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Rays receive: 3B Ben Williamson
Drafted 57th overall in 2023 after what Baseball America called a “monstrous senior season” at William & Mary, Williamson rocketed up to Double-A in his first season in the Mariners season, and stayed on the fast track by picking up 295 plate appearances for Seattle in 2025, putting up a 90 wRC+ against left handed pitching and a 70 wRC+ against right before getting demoted in August.
Like many young players acquired by the Rays lately, it’s a low-whiff/high-contact/low-power approach at the plate, but Williamson’s comes with a noisy, tentative leg kick that belies a power stroke.
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If he can hit to all fields it probably works fine.
Williamson has played all but 20 games in his professional career at third base, but with Junior Caminero entrenched, it stands to reason the Rays view this right handed bat as more of a utility man. Will he make the cut? The 40-man is crowded with right handed hitting options, and there wasn’t a clear need for a back-up infielder heading into this deal.
Perhaps the Rays made this deal because they were looking for a more sure handed defensive back up — but he will need to be tested at short just as much as Ryan Vilade will this Spring.
If you’re inclined to think Joey Wendle is a successful model for a major league contributor, Williamson is a good bet, but major league comparisons to Matt Duffy while Williamson was a prospect make me shudder.
If you are inclined to Joey Wendle as the comp, “PTBNL or cash” would have been the return, but some evaluators are higher on Williamson for his glove and malleable approach at the plate. RJ Anderson at CBS Sports gave a 3B Ke’Bryan Hayes projection, writing, “There are worse fates.”
The cost for the Rays is the former No. 55 overall selection OF Colten Ledbetter — who was selected two picks in front of Ben Williamson in the 2023 draft — and the No. 72 overall selection in 2026. Ledbetter is a smash and grab outfielder, swinging a quick bat and capable of stealing bases. The Rays had him positioned to allow more time for center field reps, but the Cardinals may be content to try him in the corners and let the bat play. Ledbetter put up a 112 wRC+ in the jump to Double-A.
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