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5/22/2013 4:32 P.M. ET

Pelfrey remains on schedule to start Sunday

ATLANTA -- Mike Pelfrey's start against the Braves on Tuesday night lasted just two innings because of a 76-minute rain delay, but he is still slated to start on normal rest on Sunday against the Tigers.

Twins manager Ron Gardenhire said that Samuel Deduno, who will be officially recalled after Thursday's game, remains the club's starter for Friday's game in Detroit. But he didn't fully rule out the possibility of Pelfrey seeing some action before his start on Sunday.

"We wouldn't want to do that with him, but we've talked about different scenarios," Gardenhire said of Pelfrey starting Friday. "Maybe sling him in the middle before somebody else starts. But we'll talk about that and straighten that out as we go along here."

Pelfrey, who had Tommy John surgery on May 1 last year, lobbied to come back out after the delay but was held back for precautionary reasons. He was initially slated to return but after the power went out in the stadium and caused a further delay, long reliever Anthony Swarzak came in for the third inning.

"After the first one I thought we were ready to put him out there, but after the lights went out and he was going to have to go do it again, there was no chance," Gardenhire said. "But he really fought it. He wanted to go out there. He said he'd done it before, but he also never had elbow surgery before. For him to slip on the mound and hurt himself, I'd be sick to my stomach."

Worley demoted to Triple-A to work on location

ATLANTA -- After giving up a career-worst eight runs in just 3 2/3 innings in the Twins' 8-3 loss to the Braves on Wednesday, Vance Worley was optioned to Triple-A Rochester after the game. Minnesota will make a corresponding roster move on Friday, presumably to bring up Samuel Deduno to start against the Tigers.

Worley, who was the club's Opening Day starter and was acquired in the trade that sent Ben Revere to Philadelphia over the offseason, has struggled his year, with a 7.21 ERA in 10 starts. The right-hander struck out just 25, walked 15 and served up nine homers over 48 3/3 innings.

"I just need to work on being myself and getting back to what I was doing," said Worley, who had a career 3.50 ERA in three seasons with the Phillies. "They haven't seen what I've been capable of doing. Ever since I've been here, it's been a battle, so I need to figure it out."

Worley left the ball up against the Braves and ended up giving up 10 hits and three homers, including a grand slam to Evan Gattis.

Twins manager Ron Gardenhire said Worley needs to work on locating his pitches better while in Rochester.

"We're counting on him," Gardenhire said. "He has to pitch better than that. He needs to get the ball down and start making quality pitches. Even time he makes a bad pitch, they make him pay for it. He can turn it around, but he needs to make that happen."

Colabello called up as Plouffe hits 7-day DL

ATLANTA -- The Twins made a slew of roster moves before Wednesday's game against the Braves, placing third baseman Trevor Plouffe on the 7-day disabled list with concussion-like symptoms and recalling infielder/outfielder Chris Colabello from Triple-A Rochester.

The Twins also placed outfielder Darin Mastroianni, who is set to have ankle surgery on Wednesday, on the 60-day disabled list to make room for Colabello on the 40-man roster. Mastroianni was originally placed on the 15-day DL on April 16, but he isn't expected to return until July.

Plouffe, who was kneed in the head by the Braves' Dan Uggla while sliding into second base in the 10th inning of Tuesday's 5-4 loss, said he passed his initial concussion tests but still showed symptoms of a possible concussion.

"I passed my concussion test, but I think my initial reaction made them think twice about it," Plouffe said. "I was a little foggy and a little dazed and sensitive to the light. But I'm feeling a lot better today."

Plouffe will be reevaluated on Friday when he takes the ImPACT test to determine whether he has a concussion or just showed symptoms after the initial blow to the head.

"The doctor examined him, but as far as the ImPACT test, we'll wait a couple days for that," Twins assistant general manager Rob Antony said. "He had some symptoms, and therefore, to play it safe, we opted to use the 7-day DL to give him a few days and do the test and give him a chance to make sure everything is clear."

Plouffe's injury provided an opportunity for Colabello to get his first callup to the big leagues. The infielder/outfielder made his Major League debut in right field in the finale against the Braves. It was a long time coming for Colabello, who played in the independent Can-Am League for seven years until joining the Twins organization last year.

The 29-year-old forced the Twins' hand, hitting .358 with 12 homers and 39 RBIs in 46 games at Rochester to get the promotion. He said he didn't find out until about 1 a.m. on the team bus and barely made his 6:25 a.m. flight from Rochester to Atlanta.

"It was a little bit of shock, a little bit of tears, a little bit of laughter -- so a lot of emotions, I guess," Colabello said. "Everyone was so thrilled. To be able to share that with those guys and to see the excitement that a lot of those guys on the bus had for me was one of the things that was the most special about the moment. Because to a man, everyone came up to me and gave me a big hug and congratulated me. So it was pretty awesome."

Colabello's natural position is first base, but he has been taking fly balls in the outfield over the past three weeks to prepare for a potential promotion. He made three starts in right and one in left to get ready for the possibility of seeing time in the outfield with the Twins.

"I feel OK in the outfield," Colabello said. "It's a matter of the more time out there the more comfortable you feel. So I'll go out there and play the game and see what happens."

Long night leaves Mauer on bench

ATLANTA -- With Tuesday night's game ending just before midnight because of a 76-minute rain delay and 10 innings of play, Twins catcher Joe Mauer was held out of the starting lineup on Wednesday afternoon against the Braves.

It forced the Twins to shuffle their lineup, with shortstop Pedro Florimon making his first start in Mauer's usual two-hole in the lineup, while Ryan Doumit started behind the plate. Eduardo Escobar started at third base for Trevor Plouffe, who before the game was placed on the seven-day disabled list with concussion-like symptoms. Escobar hit leadoff for the first time this year.

Brian Dozier, who has been slumping this month, moved down from his usual leadoff spot to eighth.

"Florimon has been having great at-bats and swinging good, and Escobar fits the profile [of a leadoff hitter]," Twins manager Ron Gardenhire said. "So trying something different with Dozier at the bottom. And [Aaron] Hicks has been swinging good right-handed, so I even thought about moving him up there. But I just left him where he's at to keep him comfortable. But with Mauer out, you always have to invent. It changes the face of the lineup"

Mauer, who went 2-for-4 on Tuesday, was available to pinch-hit according to Gardenhire.

"He's available off the bench," Gardenhire said. "And that's never a bad thing."

Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, and follow him on Twitter @RhettBollinger. This story was not subject to the approval of Major League Baseball or its clubs.