PHOENIX -- Adam Dunn will take fly balls in the outfield during weekend batting practice at Chase Field, under the supervision of bench coach Joey Cora and first-base coach Harold Baines, to have him ready to possibly play left field during the Interleague series in Colorado beginning on June 28.

"It's just in case we need him to play the outfield. Just in case we need him to get more at-bats," Guillen said. "This trip is too early to put him out there."

Dunn has not played the outfield since 2009. He has nine homers at Coors Field and 25 at Wrigley Field, marking the two remaining White Sox road Interleague venues.

Six-man rotation likely to stay until break

PHOENIX -- The White Sox six-man rotation apparently will return to the South Side next week.

With Jake Peavy dealing on Thursday night for Triple-A Charlotte, striking out nine over six innings and allowing only two hits without a walk against Syracuse, the right-hander's return could come as soon as Wednesday night's series finale against the Cubs. White Sox pitching coach Don Cooper was pleased with Peavy's results, as was manager Ozzie Guillen.

But while both were leaning toward keeping the six-man through the All-Star break, even with off-days on June 23 and 27, the final alignment still has to be hashed out this weekend.

"We have to sit down and talk about when we're going to plug him in," said Cooper. "He made it through and did well, but we haven't decided exactly when to insert him in there."

"Our easiest thing is to go six," Guillen said. "Who am I going to move out of our rotation? Everyone is throwing the ball pretty good. Most likely we go to six. But we try to figure out that we might go back to six all the way to the All-Star Game."

White Sox starters facing the Cubs currently stand as Gavin Floyd, Mark Buehrle and Edwin Jackson. But Peavy could move Jackson back two days to start against the Nationals.

Peavy made Thursday's rehab start as a test run for his strained right groin, aggravated during a June 5 loss at home to the Tigers. He previously made three rehab starts for Charlotte in fighting his way back from surgery to repair a detached lat muscle last July, causing Guillen to poke a little fun at his top-of-the-rotation starter.

"I'm telling you, Peavy might make the All-Star team at Triple-A," said Guillen, echoing a comment Peavy made about his latest rehab effort. "We might send him to throw the playoffs out there."

Inconsistent Pierre to remain atop lineup

PHOENIX -- Ozzie Guillen delivered a direct message concerning Juan Pierre during his pregame media session Friday at Chase Field.

Those who want a change in the outfield probably won't support the manager's sentiment.

"If people don't like Juan, well, that's too bad," Guillen said. "As long as he's here, I have to play him. He's my leadoff guy and can make a lot of things happen. We know he's struggling right now."

Pierre exited Friday's 4-1 Interleague loss to the D-backs with a .255 average and 10 stolen bases. Following a bounce-back month of May, during which he hit .286 with a .365 on-base percentage, Pierre has dropped in June to a .208 average and a .283 on-base percentage.

Over the last eight games, Pierre is just 6-for-34. Nobody understands how a leadoff man's struggles affect the lineup and the scrutiny that follows better than Pierre.

"Without a doubt, especially when we don't score runs," Pierre said. "Yesterday, the [1-0 loss to the Twins] really gets to me a lot when we don't score, knowing if I get on base once or more, I usually score at least one run. That's when I take it personal.

"I look to be the spark plug, the guy to be the guy to jump-start the offense. I haven't done it with any consistency. Safe to say, I haven't done it at all this year. It's frustrating, but it's a new day."

Guillen understands the groundswell for hot-hitting Dayan Viciedo to be called up from Triple-A Charlotte, giving the White Sox a slugging outfield of Carlos Quentin, Alex Rios and Viciedo from left to right. General manager Ken Williams and Viciedo recently told MLB.com that Viciedo is big league ready, but both Williams and Guillen agree Viciedo only would come up as a starter.

There's also the matter of which player gets taken off the roster when Viciedo arrives.

Viciedo focused at the plate, in right field

PHOENIX -- With two doubles and one home run in Triple-A Charlotte's 3-2 loss to Syracuse on Thursday, Dayan Viciedo was 18-for-39 in his last 10 games. He went 11-for-20 in his last five games.

Viciedo has five doubles, one home run, six RBIs, a 1.167 OPS and just five strikeouts over the 10-game stretch. And a large part of Viciedo's growth with the bat comes from focusing on just one defensive position, which is right field.

"I'm not as scattered on my thoughts," said Viciedo in a recent interview with MLB.com, with the help of translator Jackson Miranda. "The one thing about playing the outfield is it's not as high intensity as playing the infield. You are able to focus on things, compared to playing in the infield where it's really coming at you."

Viciedo began Friday hitting .325, with 21 doubles, 11 home runs, 47 RBIs and a .913 OPS. He prefers right field but is ready to play wherever and whenever in the big leagues.

"As long as I get to play," Viciedo said. "It's really more about just getting the practice time than any other distraction."

Third to first

• Jermaine Dye, who hit 164 home runs over five years for the White Sox and was the 2005 World Series Most Valuable Player, spent time with his old team. Dye, who lives in the Phoenix area, is coaching his two sons' youth team in retirement.

• Paul Konerko's seventh-inning homer on Friday was his 50th in Interleague Play, putting him fourth all-time.

• The White Sox are 2-2 in 2011 Interleague action and 145-106 all-time.