Red Sox trade for infielder, send Kyle Harrison, two others to Brewers in 6-player deal

FORT MYERS, Fla. — The Red Sox made a trade Monday morning to solidify their infield mix, acquiring a Rookie of the Year finalist from the Brewers in a six-player deal.

Boston acquired Caleb Durbin from the Brewers in a package that will send Kyle Harrison, David Hamilton and Shane Drohan to Milwaukee, sources confirmed to MassLive’s Chris Cotillo. The Red Sox will also get Andruw Monasterio, Anthony Seigler and a Comp B pick in the deal, which should be finalized Monday as the Red Sox officially open spring training at Fenway South.

Durbin, who just turned 25, just surfaced recently as a potential infield addition for the Red Sox, who have been linked to trade candidates like Houston’s Isaac Paredes and the Cubs’ Nico Hoerner and Matt Shaw in recent weeks after third baseman Alex Bregman signed a five-year deal with Chicago. A former Yankees farmhand who was traded to Milwaukee last winter, Durbin mostly played third base (1,060.2 innings) as a rookie in 2025 but can also play second base, making him an option at both positions for Alex Cora. With Willson Contreras installed at first base and Trevor Story at shortstop, the Red Sox have Durbin, Marcelo Mayer, new free agent signee Isiah Kiner-Falefa as options at second and third base as camp begins. Durbin played 10 games at second and three at shortstop as a rookie.

In the 5-foot-7 Durbin, the Red Sox get a sure-handed fielder who had an average offensive season at the plate. In 136 games, he hit .256 with 11 homers, 25 doubles, 53 RBIS and a .721 OPS while stealing 18 bases in 24 tries. Durbin barely struck out last year (9.9%) and also led the National League by getting hit by 24 pitches. He ranked among baseball’s best in strikeout rate (98th percentile) and whiff percentage (96th) but did not hit the ball hard at a consistent rate, per Statcast. Defensively, he had five defensive runs saved at third base.

The Red Sox also obtained Monasterio, a 28-year-old utility type who had a .755 OPS in 68 games fort the Brewers last season while playing five positions (mostly shortstop) and Seigler, a former minor league free agent signee who made 25 appearances at third base for them after debuting last year. Both players project to join a deep pool of backup infielders for the Red Sox, who even after trading Hamilton still have Nick Sogard, Nate Eaton, Romy Gonzalez and recent waiver claim Tsung-Che Cheng in the mix behind Durbin, Mayer and Kiner-Falefa. Both Monasterio and Seigler, like Durbin, have minor league options remaining, meaning they can move freely between the big leagues and Triple-A.

To obtain the three infielders, the Red Sox dealt a trio of spare parts from their 40-man roster in a package headlined by Harrison, who was the key piece acquired as part of the Rafael Devers blockbuster trade in June. The 24-year-old Harrison departs having logged just 23 ⅔ innings in a Red Sox uniform. He was expected to serve as rotation depth entering the season. In Harrison and Drohan — a 27-year-old former fifth-round pick who burst back onto the prospect scene with a strong 2025 season — the Red Sox dealt two pitchers from a deep pool of rotation options. Even after dealing Hunter Dobbins, Richard Fitts and Davis Sandlin – and now Harrison and Drohan — while also losing Lucas Giolito and Cooper Criswell, the Red Sox remain 10 deep when it comes to the starting group. Behind Garrett Crochet, Ranger Suárez, Sonny Gray, Brayan Bello and Johan Oviedo are veterans Kutter Crawford and Patrick Sandoval as well as rookie lefties Connelly Early and Payton Tolle, who are both certain not to be dealt now after popping up in trade rumors all winter.

The speedy Hamilton, who appeared in 204 games with the Red Sox over the last three years, returns to the organization that drafted him in the eighth round back in 2019. Milwaukee sent Hamilton to the Red Sox via trade in December 2021 as part of the Hunter Renfroe-for-Jackie Bradley Jr. swap.

Boston also received a draft pick that currently projects to be No. 67 in July’s draft. The club previously forfeited its second and fifth-highest picks when it signed Suárez, who had declined a qualifying offer from the Phillies. The Red Sox will first pick at 20th overall, then again with the pick they acquired from Milwaukee after forfeiting their second-round selection for Suárez.

All six players involved are on the 40-man roster. The Red Sox will have a full 40-man group when camp opens but still need to add Kiner-Falefa to the mix when his deal becomes official. Boston can shift injured righty Tanner Houck to the 60-day injured list to create a spot.

This story will be updated as more information becomes available.

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