The Boston Red Sox added an infielder Tuesday. No, his name isn’t Pete Alonso.
The Red Sox acquired Tristan Gray from the Rays in a trade that sent minor-league pitcher Luis Guerrero to Tampa Bay. Boston designed first baseman Nathaniel Lowe for assignment to make room for Gray on the 40-man roster.
Gray isn’t exactly a household name — he’s spent time with four teams over the last two years since making his major league debut in 2023. The 29-year-old appeared in 30 games for the Rays last season, however, posting a .231 batting average with a .693 OPS to go along with three home runs, nine RBI and five doubles.
Gray has positional versatility, as well: He made nine starts at second base, seven starts at shortstop, three starts at second base and one start at first base last season. At the moment, he projects as an infield depth option who can make the occasional spot start if needed.
That begs the question: What could Boston’s starting infield look like in 2026? The answer is complicated, as the Red Sox are rumored to be interested in several prominent infield free agents while awaiting the decision of starting third baseman Alex Bregman.
Here’s a position-by-position rundown of Boston’s infield:
First base
- Current depth chart: Triston Casas, Romy Gonzalez
- Potential free-agent targets: Pete Alonso, Kyle Schwarber, Munetaka Murakami, Kazuma Okamoto
You’d have to think the Red Sox will add a power-hitting first baseman this offseason, especially after DFA’ing Lowe. Casas has All-Star potential when healthy but has played just 92 games total over the past two seasons.
It appears Boston is already testing the first-base waters; MLB Network’s Jon Morosi reported the Red Sox are the “strongest contender” for Alonso if he doesn’t re-sign with the New York Mets, while adding that Craig Breslow and Co. have “checked in” on Schwarber.
Murakami and Okamoto are two of the best hitters in Japan who are both coming stateside this winter. Both are third basemen but can play first base, so perhaps the Red Sox would explore adding them as well.
Second base
- Current depth chart: Marcelo Mayer, Kristian Campbell, Romy Gonzalez, David Hamilton, Tyler Sogard, Tristan Gray
- Potential free-agent targets: Bo Bichette
Here’s where things get complicated.
If Alex Bregman re-signs in Boston after opting out of his contract, Mayer likely would be the starting second baseman, with Bregman playing third and Trevor Story at shortstop. If Bregman signs elsewhere, Mayer likely would slide to third, where he played 39 games last season.
Campbell was Boston’s opening day starter in 2025 but was in the minors by June. If the Red Sox believe he’s ready for the big leagues, he could get first crack at second base in the Mayer-at-third-base scenario. If not, perhaps they’d look to free agency; Audacy’s Rob Bradford reports the Red Sox have interest in Bo Bichette, who is primarily a shortstop but played second base during the World Series.
Ceddanne Rafaela also had a brief stint at second base last season but just won a Gold Glove in center field, so the Red Sox would be wise to keep him there.
Shortstop
- Current depth chart: Trevor Story, Marcelo Mayer, David Hamilton, Romy Gonzalez, Tristan Gray
- Potential free-agent targets: Bo Bichette
Story opting in to stay in Boston solves at least one piece of the infield puzzle. But if Bregman signs elsewhere and the Red Sox want to get creative, they could sign Bichette to play shortstop, move Story to second base and start Mayer at third base.
Even if Bregman returns, Boston could benefit from having an extra starting-caliber infielder in the mix, as the team was very thin at first base last season following Casas’ injury.
Third base
- Current depth chart: Marcelo Mayer, Nate Eaton, Romy Gonzalez, Tristan Gray
- Potential free-agent targets: Alex Bregman, Munetaka Murakami, Kazuma Okamoto
As stated above, this comes down to whether Bregman re-signs with Boston or seeks greener pastures. The latter scenario might motivate the Red Sox to pursue either Murakami or Okamoto to bolster the corner of the infield. But Mayer figures to be the incumbent — assuming he can stay healthy.
