BOSTON -- Cubs center fielder Marlon Byrd was to be hospitalized overnight Saturday after being hit on the left side of his face under his eye by a pitch in the second inning by the Red Sox's Alfredo Aceves.

"He took it pretty flush, from what I heard," Cubs manager Mike Quade said. "It's something that's dangerous enough that they're going to take a good look at it."

The Cubs, who rallied to beat the Red Sox 9-3, did not expect an update until Sunday.

With one out in the second and the count 1-2, Byrd was struck by a pitch, and he dropped to the dirt. He was writhing in pain -- and grabbed his face. He was able to walk off under his own power but had a bloody gash under his eye.

He never lost consciousness. Byrd was taken to Massachusetts Eye and Ear Infirmary to be examined.

"You could see he was scrambling and kind of panicking because he doesn't know what's going on," Cubs outfielder Reed Johnson said. "I know whatever he can do to get back sooner, he'll do. He'll probably end up coming back sooner than we think. Hopefully, everything will work out all right."

Aceves said after the game that the beaning was unintentional. He said he tried to find out how Byrd was doing but hadn't heard, saying he was concerned.

"There's nothing you can do about a walk or a hit by pitch," Aceves said. Nothing intentional, obviously."

It's the 13th time a Cubs player has been hit by a pitch since May 6, and the fifth time Byrd has been plunked since May 11. He was hit twice on Friday.

"I came up every inning when I was pitching and asked the trainer how Marlon was, and he said he's at the hospital," Cubs pitcher Carlos Zambrano said. "I'll put him in my prayers."

DeWitt battles Monster in first start in left field

BOSTON -- Blake DeWitt made his first career start in the outfield on Saturday and did so against the Green Monster.

"Everybody wants to go out by the Monster," said DeWitt, who was hitless in the game. "You play here, you want to see what it looks like. As far as playing out there, it'll be the first time, and I'm definitely excited about it."

DeWitt, who was a defensive sub in left field for one inning on May 12, started in left in the second game of the Cubs' Interleague series against the Red Sox. He was tested in the first inning when David Ortiz popped a ball to left. DeWitt made the catch without incident.

Alfonso Soriano started in left field on Friday and seemed to handle the balls off the wall but committed an error as he overran Jarrod Saltalamacchia's hit in the seventh.

DeWitt was projected as the team's starting second baseman this offseason but lost the job to rookie Darwin Barney. Last Sunday, Cubs manager Mike Quade had penciled DeWitt to start in left against the Giants, but that game was postponed by rain.

"He's been working his butt off in left, and I missed the opportunity with the rainout, so we'll give him a shot today and see how he looks," Quade said. "It's an option I want to see.

"His work has been good. Most guys who play the infield can go out there and do that. I'm not expecting great things but I wouldn't be surprised if his instincts and jumps are fantastic. He's not a flyer, but I think he'll be fine."

DeWitt began working in the outfield on his own and Quade was impressed.

"This started because this is a guy who wants to play," Quade said. "I'm surprised I haven't seen him catch a bullpen. He had a rough spring, other guys are playing well, he's not said a word and has found a way to contribute. You watch that and you know what, you're playing left tonight."

In his four seasons entering Saturday, DeWitt started 157 games at second and 114 at third. That's it.

"The toughest part is balls off the wall," DeWitt said. "There are different angles to the outfield. It's something you have to pay attention to in [batting practice]. I watched during the game last night. It's one of those things -- go out there and have fun."

The toughest decision was which glove to use. He borrowed outfield gloves from Marlon Byrd and Jeff Baker.

"I think I'm going to have to go with Baker's glove because it's more broken in," DeWitt said. "I've got to do some more work with [Byrd's]."

Kerry Wood overheard the conversation and volunteered his outfield glove. Why would a pitcher have one?

"I'm the best shagger we have," Wood said.

Pena's fallen college teammate honored

BOSTON -- Cubs first baseman Carlos Pena took part in a ceremony on Saturday to retire the number of a former teammate, Northeastern University pitcher Greg Montalbano, a Red Sox prospect who died of cancer in August 2009.

Pena, who walked twice and scored in the Cubs' 9-3 win, said about 15 of his former Huskies teammates attended the ceremony.

"It was very cool, emotional and special for me today," he said.

Montalbano finished his collegiate career as the team's strikeout leader with 217 and ranked third all-time with a 2.55 ERA. Drafted by the Red Sox in 1999, he pitched professionally for six years but also battled cancer, and died Aug. 21, 2009. On Saturday, Northeastern retired his No. 30.

Pena's college coach, Neil McPhee, was there, as well, for the ceremony.

Student of history, Pena appreciates Fenway

BOSTON -- Carlos Pena has a sense of baseball history and appreciates ballparks like Wrigley Field and Fenway Park.

"[Fenway has] got that romance about it, same thing as Wrigley," the Cubs first baseman said. "I know there were some guys here asking me, 'How is it? How is it?' about Fenway and I wasn't saying a word."

That's because he wanted the Cubs players to experience it for the first time on their own.

"It has a very unique shape, and that's what makes it Fenway," he said. "Sometimes, we don't realize how special it is to play in a place like this. Babe Ruth played here. The history of baseball, this is what it's all about. I don't want to forget I'm wearing a uniform and playing baseball in a place like this. That's what dreams are made of."