CLEVELAND -- The Royals dropped back into a five-man starting rotation on Trade Deadline day, but it had nothing to do with a trade.

Right-hander Kyle Davies was scratched from his scheduled start on Sunday against the Indians because of inflammation in his right shoulder. Left-hander Danny Duffy, who was slated to start on Tuesday, moved up to take Davies' turn.

Duffy went five innings for his third victory, allowing two runs on eight hits with three walks and six strikeouts in the Royals' 5-3 victory.

The rest of the rotation will also move up, meaning that left-hander Bruce Chen will start against the Orioles when the Royals' homestand opens on Tuesday night at Kauffman Stadium.

Davies isn't certain if he'll miss more than one start, pending an examination by doctors and an MRI on Monday in Kansas City. Earlier this season, Davies missed 6 1/2 weeks.

"It's the same thing that happened before, the shoulder inflammation," Davies said. "It was bothering me before the game in Boston that whole week and it hasn't gotten much better."

Last Monday night at Boston, Davies held the Red Sox to one run in six innings and the Royals won, 3-1, in the 11th. It was one of his best performances this year, even though he felt he couldn't fully extend himself in his delivery.

"Maybe it tells something," Davies said. "Maybe I don't have to overthrow the ball to get people out. It could be a learning experience but, obviously, I have to get my shoulder healthy."

Davies didn't want to risk starting on Sunday against the Indians and perhaps have to leave the game in the first inning or two.

"I want to make sure I can go out there and pitch six innings from the get-go and not have what happened against Cleveland the last time, where I had to come out after one-third and tax our bullpen again," Davies said.

On May 16, Davies left after one-third of an inning and the Royals had to use seven relievers in a 19-1 loss to the Indians. After that he was on the disabled list until July 2.

Manager Ned Yost went to a six-man rotation, instead of the usual five, when Davies returned so that rookie Duffy could stay in the mix.

"It's on a regular five-man rotation," Yost said on Sunday after announcing that Davies was scratched.

Treanor says he's better following collision

CLEVELAND -- Catcher Matt Treanor, who suffered a concussion in a jarring collision on Saturday night, was back in the Royals' clubhouse on Sunday.

Treanor was moving a bit gingerly, but was smiling and eating a hearty breakfast.

"I'm going to avoid the press today," he said, "but I'm much better."

Treanor was banged by the Indians' Matt LaPorta as he took left fielder Alex Gordon's throw and applied the tag for a double play. LaPorta was trying to score in the sixth inning after Gordon caught Michael Brantley's fly ball.

Although Treanor was knocked out for a few moments, he held the ball. He left the game and was taken to a hospital for an examination.

"He was pretty out of it last night," manager Ned Yost said. "There were reports floating around that last night before he went to the hospital, he took a shower and was putting deodorant in his hair. He thought it was hair spray. Those are just reports, though, they haven't been confirmed."

Treanor was placed on the seven-day concussion disabled list, recently enacted by Major League Baseball.

This is the second serious concussion issue the Royals have had in the last two seasons. Second baseman Chris Getz suffered a concussion when struck by a thrown ball while stealing a base last Sept. 12 in Chicago and missed the rest of the season.

Catcher Manny Pina, called up from Double-A Northwest Arkansas to take his roster spot, arrived at game time on Sunday.

Navarro joins Royals for series finale

CLEVELAND -- Infielder Yamaico Navarro, obtained from the Red Sox on Saturday, joined the Royals for Sunday's game.

Navarro was obtained with Minor League pitcher Kendal Volz in a trade for infielder Mike Aviles.

"I'll play him like I was going to play Aviles," manager Ned Yost said. "Play games when Esky [Alcides Escobar] needs a break or when [Mike] Moustakas or [Chris] Getz needs a game."

"It's good for me because I'll play more," said Navarro, who was used sparingly by the first-place Red Sox.

"Shortstop is my position, I like shortstop," Navarro said. "I played a little at second base and a lot at third base, and left field, too."

Navarro also played for the Red Sox briefly in 2010. In two seasons, he batted .177 (14-for-79) in 36 games for the Sox. He belted his first and only homer in his first at-bat this year as a pinch-hitter against the Astros' J.A. Happ.

He was assigned uniform No. 24 after wearing 60 for Boston.

Yost sees red over double play call

CLEVELAND -- Sunday's 5-3 victory got off on the wrong foot for Royals manager Ned Yost, who found himself growling at the umpires in the first inning.

With one out and Melky Cabrera and Billy Butler on board with singles, Indians shortstop Asdrubal Cabrera swept past second base to field Eric Hosmer's bouncer and threw to first base. With that, the Indians trotted off the field and Yost trotted onto the field to find out why a double play was called.

Umpire Scott Barry ruled the shortstop's foot grazed second base as he caught the ball, causing a force on Butler, and his throw to first completed a DP.

Yost argued vehemently that if Asdrubal Cabrera touched second base it was well before he caught the ball. He was forceful, but was not ejected.

"I did my best to stay in the game, but I was saying, 'I've had enough of this,'" Yost said. "I don't know what happened, he just missed it. He told me at the end of the game, 'I missed it -- it's my bad.'"

Crown points

• Eric Hosmer's career-best 11-game hitting streak ended on Sunday. He was 20-for-47 (.426) during the stretch that included seven mult-hit games and eight RBIs.

• The Royals are 9-5 in their series-deciding "rubber games" this year, including five wins on the road -- at Chicago, Anaheim, New York and Detroit prior to Cleveland.

• Alex Gordon collected his 36th multi-hit game of the year and is hitting .337 (56-for-166) over his last 41 games.