NEW YORK — The Red Sox made a trio of roster swaps before Thursday’s game, shaking things up before an important four-game series in the Bronx. Outfield prospect Jhostynxon Garcia, infielder David Hamilton and righty Richard Fitts all joined the team from Triple-A Worcester while infielder Abraham Toro (designated for assignment), outfielder Wilyer Abreu (injured list) and reliever Isaiah Campbell (optioned) all left the roster.

“I think we’re more dynamic…,” said manager Alex Cora. “We’re still missing Ref (Rob Refsnyder) and missing Willy (Abreu) of course, but we’re going to be able to keep mixing and matching and all the moving parts and all that stuff. We’ll keep doing what we’ve been doing.”

Here’s how the new-look group will shake out:

How often will Garcia play?

Garcia, Boston’s top positional prospect with zero major league experience, made the quick trip from Worcester to New York on Thursday but did not start against the Yankees and righty Luis Gil. He’s slated to get his first major league start Friday night with lefty Max Fried on the mound for New York.

There is a need for Garcia because Abreu and Rob Refsnyder (oblique strain) are both on the IL with minor injuries. His stay might be a short one, though the Red Sox will get two extra spots to work with when rosters expand from 26 to 28 players on September 1. For now, expect Garcia to play a lot against lefties and mix in with an outfield group that includes Jarren Duran, Ceddanne Rafaela, Roman Anthony and, on occasion, Masataka Yoshida.

Garcia is expected to start every game against lefties while he’s up, including Friday and Sunday (against Carlos Rodón). He has played all three outfield positions at Triple-A this year and the Red Sox are comfortable with him in center field, if need be. A combination of Duran and Garcia will start in left and center against lefties with Anthony manning right.

Against righties, the expectation is that Rafaela will play more center field than second base. In that scenario, it’s likely Duran and Anthony flank him in the corners. Yoshida will be in the DH mix.

Refsnyder can return as soon as Monday in Baltimore when Boston begins a four-game series with the Orioles. The expectation is that he’ll be back then. Refsnyder is with the team in New York.

“He’s moving well. He’s feeling well, so most likely,” Cora said.

Abreu left Sunday’s game with calf tightness and missed Monday and Tuesday’s games. He was hoping to be able to face the Yankees and righty Luis Gil on Thursday but instead was placed on the injured list, retroactive to Monday. He can return as soon as next Thursday in Baltimore.

“We’re in a good spot but not a great spot. Let’s put it that way,” said Cora.

“He was supposed to go out there and run today and he didn’t feel like he was ready for that, so I think it’s the right move. Hopefully, he’ll be back as soon as possible.”

Who’s at first? What about second?

With Toro off the roster, Cora expects a strict platoon of Nathaniel Lowe (against righties) and Romy Gonzalez (against lefties) at the first base position. Toro had made 56 starts at the position since being promoted in May in the wake of Triston Casas’ season-ending knee injury but was redundant with Lowe on the roster.

“We’ll mix and match, like we always do,” Cora said.

At second base, Hamilton and Rafaela will platoon, though Gonzalez can also play there if the Red Sox want to use Lowe at first base against a left-handed starter. Kristian Campbell remains at Triple-A as a potential call-up option for the final month and while the Red Sox are pleased with his recent offensive performance, they still are hoping to see more strides on the defensive side of things.

How will Fitts factor in? What’s next for Slaten?

Fitts, who has made 17 starts across three levels this season and has just one relief appearance in his 94 professional outings to date, will be in the bullpen — for now. The Red Sox brought him back as a versatile relief option capable of pitching in short, late-inning stints or multi-inning situations. The club is discussing moving struggling starter Walker Buehler to the bullpen, though, according to sources, so there’s a chance Fitts could take Buehler’s rotation spot as soon as Monday in Baltimore.

“Getting Fittsy here, we’ll use him however,” said Cora. “Multiple innings, one inning. He has velo, he throws strikes so we’ll feel comfortable with him.”

Righty Justin Slaten, who has been out since late May with shoulder/neck issues, is close to a return. He will make his next rehab outing Friday in Worcester and could re-join the team next week, necessitating further roster moves.

“He’s pitching Friday. There’s a chance there’s two (more outings),” said Cora. “We’ve just got to make sure. He’s too important to us to rush him into this. We’ll see how he bounces back Friday and most likely Sunday. Hopefully, the plan is maybe at the end of the week, be with us.”

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