GLENDALE, Ariz. -- White Sox manager Ozzie Guillen now knows his final 25-man roster headed to Cleveland for Opening Day on April 1.

Guillen simply chose to defer announcing that piece of official news following his team's 6-3 loss to the Angels on Saturday at Camelback Ranch.

The final decision before breaking camp appeared to come down to Lastings Milledge and Brent Lillibridge as the 25th man and last position player, with Phil Humber looking safe as the temporary fifth starter and Jeff Marquez seemingly on the team as the long reliever. It was a 12th-pitcher idea posed by general manager Ken Williams when talking to the media Wednesday, used as a way of insulating the White Sox in that fifth spot with Jake Peavy out of action.

But comments from Guillen following Marquez's four-inning Saturday start, during which he allowed three runs on six hits, just might indicate both Lillibridge and Milledge will be leaving Arizona with the White Sox.

"He pitched well. He pitched good. He did everything we asked him to do, and that's the best Spring Training he's had, put it that way, since we've had him," said Guillen of Marquez, who came over from the Yankees as part of the November 2008 Nick Swisher trade.

"In the meanwhile, you have to make moves sometimes," Guillen said. "The last move always hurts."

If Marquez is indeed the last move, the White Sox might have felt an 11-man pitching staff was workable with a starting four known for working deep into games, a solid bullpen and two early off-days in April. The White Sox wouldn't need a fifth starter until April 10 and 20, meaning Humber could work in long relief during the first few weeks.

Lillibridge and Marquez both are out of options, meaning they would have to clear waivers before being sent to Triple-A Charlotte. There weren't many roster decisions for the White Sox to make coming into Spring Training, but outstanding play from Lillibridge and Milledge potentially turned the last call into one in which neither loses.

"We needed them to battle, to compete against each other, and that battle was awesome," said Guillen of Lillibridge and Milledge. "Either move we make was not a comfortable one.

"I'm not going to say it was unfair, but unfortunately it's a 25-man roster. That decision was what we need the most on the team, what we should get. We're going to go with what we think is best for the club."

Sunday a day of work for Peavy

GLENDALE, Ariz. -- Jake Peavy confirmed a side session off the mound will take place on Sunday, after he ramped up the intensity in playing catch Saturday. There still is no set date for Peavy to get back into game action, although a White Sox fifth starter truly isn't needed until April 10 and 20 due to early April off-days.

"Tomorrow we'll find out where we stand and hopefully progress throughout the week, start making some starts again and build my pitch count back up," said Peavy, who plans to treat Sunday as a normal side session where he throws all of his pitches. "I would think if I get on the mound and everything's good, we'll treat it like you just missed a start.

"I don't think I'm going to jump in and throw 80 pitches again. I think we'll probably back down. I think we'll start and build that process up again. Hopefully sooner than later, but I'm not really sure."

Peavy has not pitched since working 5 2/3 innings against Oakland on March 19 and then feeling discomfort the next day, diagnosed as rotator cuff tendinitis.

Lucy likes how White Sox fit

GLENDALE, Ariz. -- Donny Lucy will be one of the final roster cuts made by the White Sox when they announce their 25-man group, with Lucy targeted to back up catcher Tyler Flowers at Triple-A Charlotte. Lucy broke camp with the team last year and not only earned praise from the pitchers for how he handled the staff, but also hit .333 in seven games at the season's outset.

Unfortunately for Lucy, hitting .225 on his return to Charlotte didn't help him find any more concrete job offers when he became a Minor League free agent this past offseason. So, Lucy returned to familiar ground with the White Sox.

"I had an opportunity to test that market and there were some teams interested and some different situations, but it would have been a lateral move with another team," Lucy said. "And after talking to my agent and family, if I'm going to make that move, I might as well be with a team that knows me and I know the staff.

"They invested a lot of coaching hours in me and money and time. So, it made sense, even though I'm kind of, in reality, a third or fourth catcher here, to come back. I can't say enough about their organization and they give me a lot of opportunities. I'm grateful they brought me back. Hopefully, I get back up and help the team at some point."

Lucy hit a home run in the Cubs game at HoHoKam Park on Thursday, but told a humorous story of how his brother missed the clout. Lucy originally didn't think he would get in that particular game, with A.J. Pierzynski going eight innings or all the way, so his brother stayed back at the hotel to watch family favorite San Diego St. play in the NCAA basketball tournament.

Third to first

The White Sox re-signed right-handed pitcher Dexter Carter, who was recently released by the Padres. Carter, 24, was part of the deal bringing Jake Peavy from San Diego to the White Sox in 2009. ... Lastings Milledge extended his hitting streak to 11 games with a hit in Saturday's 6-3 loss to the Angels. ... Carlos Quentin has nine RBIs in his last 24 at-bats.