FORT MYERS, Fla. — The roster isn’t set and injuries will undoubtedly play a role, but slowly, the Boston Red Sox batting order is starting to come into sharper focus.

Manager Alex Cora was initially reticent to reveal much of his thinking beyond the top two spots in the lineup Wednesday: Jarren Duran in the leadoff spot, followed by Rafael Devers.

But the more he spoke, the more his thinking was revealed. Cora eventually acknowledged that he envisions newcomer Alex Bregman as his No 3 hitter, to be followed by Triston Casas in the cleanup role and Trevor Story fifth.

“Everybody’s going to talk about protecting Raffy and splitting up the lefties,” Cora said. “If I can say the top three right now, it most likely would go Jarren, Raffy, Alex, in that order, to start off.

“The other part all depends. We talk about lefties all depends. There’s not too many lefties that we face when you look around the leagues. Obviously, bullpens are going to load up. Some of them, they have two lefties; some of them will have three really good lefties. We’ll think about it. But I think having those three that way, that’s a pretty good lineup.”

Cora went on to explain his reasoning for having Bregman third, in order to insert a right-handed bat between Devers and Casas.

“I think those two at-bats in a row, Alex and Casas, gives us a different dimension,” said Cora. “We can let the big boys do their thing, be aggressive and solve the problem early on. And then, all of a sudden, we can slow it down (with the more patient Bregman and Casas). That’s one thing we haven’t been able to do in a while.”

Cora then confirmed that another right-handed bat, Story, would likely follow Casas for more left-right balance.

“As of now, yeah,” said Cora chuckling. “We can go those top five. After that, I’m done.”

The final four spots will need to include catcher Connor Wong, right fielder Wilyer Abreu (when healthy), a second baseman (presuming Bregman is at third and Devers the DH) and center fielder Ceddanne Rafaela.

Abreu makes sense in the No. 6 spot, followed by the right-handed Wong seventh, then whomever is at second — either Kristian Campbell or the left-handed-hitting David Hamilton.

It’s likely that Rafaela will again hit ninth, the spot where he spent most of last season. The Red Sox want Rafaela to get on base more (.274 OPS last year), and he’s shown the ability to be more selective this spring, but for now, he fits best at the bottom, especially since it allows the Red Sox to have their two fastest players back-to-back, with Duran in the top spot once the lineup flips.

INJURY UPDATES: Story is not in the Red Sox lineup Wednesday after being scratched Tuesday because of back tightness.

“He’s day to day,” Cora said at JetBlue Park.

The Red Sox will travel to Port St. Lucie to play the Mets on Thursday. Those players who are not making the trip will participate in a simulated game in Fort Myers.

“So probably he (Story) will take part in that with the other group,” Cora said.

Cora said he has no concerns.

“Just stay away from him today,” Cora said. “I think that’s the smart thing to do. He’ll play tomorrow (in the instrasquad game), and then we’ll shoot for Saturday, just like Raffy (Raffy Devers).”

Devers, who has not yet played in a Grapefruit League game, is expected to take at-bats in the simulated game Thursday.

In other news:

• Starter Lucas Giolito‘s MRI was scheduled for 2:30 p.m. Wednesday. The Red Sox should know more Thursday.

Giolito felt some tightness in his left hamstring when he threw his first pitch in his first Grapefruit League start Tuesday.

Giolito doesn’t expect it to be anything serious.

• The Red Sox are waiting for more lab results on Abreu, who didn’t participate in baseball activities during the first two weeks of camp because of a viral gastrointestinal illness.

“Things are trending in the right direction,” Cora said. “I don’t believe he’ll play this week. But he’s doing more actually on the field. He was part of a drill we had yesterday defensively. He’s throwing well. He’s moving well. He’s just anxious now to get the green light. Hopefully we get better news in the upcoming days and we can let him play.”

• Starter Brayan Bello threw a live batting practice session Wednesday but will not be ready for Opening Day after experiencing shoulder soreness earlier in camp.

WEDNESDAY’S GAME: Marcelo Mayer and Mark Kolozsvary had RBI singles in the bottom of the ninth as Boston edged Minnesota 6-5 at Fort Myers, Florida.

Triston Casas hit his first homer of the spring, a three-run shot in the first inning.

Tanner Houck started for Boston and last 2 2/3 innings, allowing five runs and eight hits. He walked three and struck out two.