BOSTON -- Things could always change, but as of right now, manager Terry Francona is leaning toward pitching Clay Buchholz on three days' rest on Wednesday night against the Rays, the team the Red Sox trail in the American League Wild Card standings.

That was originally supposed to be Buchholz's start anyway, but Friday night's rainout means he would now have to pitch that game on short rest, something the righty has never done in his career.

"We'll see," Francona said. "We had talked to him before, about what we were thinking about doing. And he has no hesitancy at all. I think out of common sense we'll make sure there's nothing that gets in the way. But I think he'll be OK."

The reason for pitching Buchholz on Wednesday was pretty obvious to Francona.

"We're trying to win, we're trying to win," Francona said. "It's kind of an obvious one. And the rainout forced our hand a little bit. We can either go [with a] bullpen day against Tampa [Bay] or pitch Buck."

Buchholz is having a breakout season for the Red Sox. He is 15-6 with a 2.25 ERA in 24 starts.

Scutaro to have MRI on Tuesday

BOSTON -- The fact that Marco Scutaro has been playing at far less than 100 percent for nearly the entire season is no secret. And while the Red Sox appreciate the shortstop's willingness to play hurt, they also want to make sure he doesn't do anything damaging. So on Tuesday, Scutaro will get an MRI on his right rotator cuff, which has been bothering him for over a month.

Scutaro was not in Sunday's lineup against the White Sox, but that had more to do with playing all 18 innings of Saturday's doubleheader than the upcoming MRI.

"I told him yesterday, he could take his pick of playing the second game or today," said Red Sox manager Terry Francona. "He wanted to play the second game. He had real good numbers [against White Sox starter Gavin Floyd], so that made sense."

The reason Scutaro is having his MRI on Tuesday is because Monday is Labor Day.

"We know he's playing through a lot," Francona said. "How much, we don't know. We'll get him looked at on Tuesday."

Earlier this season, Scutaro was playing with a pinched nerve in his neck, which also impacted his left elbow and sapped him of so much strength that he couldn't even lift weights.

"I've never had a year like this," said Scutaro. "It's been a tough one. Hopefully next year isn't like this one."

Scutaro has been Boston's leadoff hitter most of the season, hitting .272 with 76 runs, 32 doubles, eight homers, 49 RBIs and a .332 on-base percentage.

Darnell McDonald replaced him in the leadoff spot on Sunday while Yamaico Navarro batted eighth and played shortstop.

Coello arrives in the big leagues

BOSTON -- There was a new face in Boston's clubhouse on Sunday morning, as the Red Sox purchased the contract of right-hander Robert Coello from Triple-A Pawtucket.

Like Daniel Nava, who belted a grand slam on his first Major League pitch earlier this season, Coello used to pitch in the Golden League, which is an independent league.

He was drafted by the Cincinnati Reds as a catcher in 2004 but converted to pitcher. This is Coello's first stint on a Major League roster.

"Kind of an interesting story," said Red Sox manager Terry Francona. "Kind of not the route a lot of guys have taken. That doesn't mean he can't be successful. This will be interesting. Pretty good fastball. You know, he's a conversion guy. The secondary pitches are probably still in progress, still developing. It will be interesting to see how he does. We're trying not to call up guys if there's not a place for them to pitch or play, but I think there's probably innings there for him. It will be good to see."

Coello, 25, was soaking in his surroundings before the game.

"I was excited when I got the call," Coello said. "[Pawtucket manager] Torey Luvullo told me, 'You know, this is what you worked hard for'. I was ready since I first signed. I was ready to get up here -- that was my goal. My ultimate goal was to get up to the big leagues and become a big league pitcher."

The righty leads Red Sox Minor Leaguers with 130 strikeouts this season, combining to go 7-6 with one save and a 3.86 ERA over 32 appearances (13 starts) between Double-A Portland and Triple-A Pawtucket in 2010. Seven of his last eight appearances have come out of the bullpen.

Cameron anticipating Spring Training

BOSTON -- Red Sox center fielder Mike Cameron, now nine days removed from season-ending sports hernia surgery, is already excited for Spring Training.

It is then that he will be able to do something he couldn't do once during the 2010 regular season -- run without any limitations.

"I've got plenty of time. It'll come," said Cameron. "I'm looking forward to it though. Looking forward to feeling pain-free and let the gates open. I can't wait to go out. I'll probably play Spring Training as hard as I've ever played in my life. By Thanksgiving, I'll be fine."

The surgery Cameron had was not a pleasant experience. It took 4 1/2 hours.

"It's a long, long surgery," said Cameron. "I hope nobody ever has to have that. It's not good."

During the surgery, doctors discovered that Cameron had tears on both sides of his groin.

"They released my groin and I don't have to worry about pulling no groins any more," said Cameron.

Cameron did his best to keep playing through the injury, but after the game on July 30, he had to shut it down for good.

"The only reason why I stopped playing was because my hip was hurting -- my flexor tendon," Cameron said. "I couldn't lift it and they said once that happens, then you're going to be done."