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5/1/2014 7:13 P.M. ET

Latos stretching out long toss before mound work

CINCINNATI -- Reds starting pitcher Mat Latos, who has been dealing with the setback of a flexor mass strain in his right forearm the past few weeks, has yet to move from flat-ground throwing to a mound.

"We have tentative dates, but first we want to accomplish getting him to his regular long toss, completely pain free, no issues, no inhibitions or whatever," manager Bryan Price said. "We have a timetable that is a grab bag right now."

Latos resumed throwing last week and reached long-toss distances of 90 feet Monday. He hoped to get on a bullpen mound by week's end if he reached 120 feet, but Price would like Latos to stretch out some more.

"If you've ever been out there to watch Mat play long toss, it's not 120 feet. It's quite a bit longer than that," Price said. "It doesn't have to be his maximum distance of long toss, but I think 120 feet would be fairly conservative length-wise. You can learn a lot about long toss. Long toss will tell you a lot. If you're uninhibited and can throw for distance, I think that is the best test before a guy gets on the mound. I think he'll get a bit further than 120 before we sign off on getting him on the mound."

Cingrani to DL with mild shoulder tendinitis

CINCINNATI -- The Reds placed left-handed starting pitcher Tony Cingrani on the 15-day disabled list Thursday with mild left shoulder tendinitis and recalled reliever Curtis Partch from Triple-A Louisville.

It was a roster move that caught Cingrani off guard, and he expressed his displeasure.

"I am fine right now. It's just a little tendinitis or something. I'd keep throwing, but it's their call," Cingrani said. "I don't agree with it. But that's what they want to do because they don't want me to injure myself. So I understand. I think I can keep throwing and be fine. They're exercising caution."

Cingrani, 24, started Wednesday and received a no-decision after pitching four innings in Cincinnati's 9-4 loss to the Cubs. During that short outing, where he allowed three runs and six hits, he threw 79 pitches and showed noticeably decreased fastball velocity in his final inning.

"He hasn't been real acute with his command either," manager Bryan Price said. "His delivery has kind of wavered a little bit. Upon further investigation, we realized he was having a little bit of discomfort in his left shoulder."

Because of three scheduled days off over the next 12 days, the Reds will go with a four-man rotation until they need Cingrani's spot again on May 17 at Philadelphia.

"It's not a good thing, but the timing for something like this to happen couldn't be better," Price said.

Price acknowledged that Cingrani could still pitch through the injury because it wasn't serious.

"But all things considered, we don't want 60 or 70 percent of Tony Cingrani if we can have closer to 100 percent," Price said. "We're going to take advantage of this spot in the schedule to get him right. We also needed to fortify our bullpen a little bit after yesterday's game. It just seemed to make sense to do it now."

Cingrani is 2-2 with a 3.34 ERA in six starts this season. His first start was seven scoreless innings on April 2 against the Cardinals. But he has struggled in a few of his outings since, including two starts where he lasted four innings.

"You guys could see what's going on. I'm not myself. You could see that every time I go out there," Cingrani said.

This will be Partch's second stint with the Reds this season. He worked 4 1/3 scoreless innings with one hit, three walks and three strikeouts before he was optioned to Louisville on April 19.

Worth noting

• Center fielder Billy Hamilton stole a team-leading 11 bases through April, the most by a Major League rookie through the first month since the Cardinals' Vince Coleman had 12 steals in 1985. It was the most by a Reds player since Deion Sanders stole 19 bases in his first 25 games of 1997.

Mark Sheldon is a reporter for MLB.com. Read his blog, Mark My Word, and follow him on Twitter @m_sheldon. This story was not subject to the approval of Major League Baseball or its clubs.