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04/10/2013 2:13 PM ET

Lefty prospect Cingrani knocking on the door

Two scoreless starts has hurler set for a callup if Reds need a starter

ST. LOUIS -- Pitching for Triple-A Louisville on Tuesday, Reds left-handed prospect Tony Cingrani pitched 6 1/3 scoreless innings against Columbus, allowing three hits, striking out seven and walking one.

In two starts, Cingrani has worked 12 1/3 scoreless innings with 21 strikeouts.

"Cingrani is the first callup if one of my starters go down," Reds manager Dusty Baker said.

There was thought of calling up Cingrani to help the bullpen while Sean Marshall was dealing with a shoulder injury. Marshall went on the disabled list on Wednesday morning.

"We kicked around Cingrani before," Baker said. "We didn't want to impede his progress in the bullpen when we're grooming him for a starter. If anything happens to one of my starters, we don't have a whole lot of quality backup."

Mesoraco starts, allowing Hanigan to regroup

ST. LOUIS -- Reds catcher Ryan Hanigan took a foul ball off his right thumb during Tuesday's 5-1 loss to the Cardinals, but it had little to do with his not playing Wednesday. Manager Dusty Baker had already planned to have Devin Mesoraco catch for Homer Bailey.

Following the Thursday off-day, Mesoraco will also catch Mike Leake on Friday at Pittsburgh. Hanigan is off to a 1-for-23 (.043) start to his season. Meanwhile, Mesoraco had started just one out of the first eight games.

"That will help [Mesoraco], and it will help Hani to just hit, hit, hit," Baker said. "He's putting a little pressure on himself. When you start off the season 1-for-20-something, it's natural. I talked to him about it. The key thing is to quit counting."

Marshall to DL; Reds recall Ondrusek

ST. LOUIS -- After several days trying to avoid it, the Reds placed reliever Sean Marshall on the 15-day disabled list Wednesday because of left shoulder tendinitis.

Right-handed reliever Logan Ondrusek was recalled from Double-A Pensacola to replace Marshall on the 25-man roster. Ondrusek was expected to arrive in time to be available for Wednesday afternoon's game vs. St. Louis.

"He's not able to go back-to-back days, and that's critical, especially with the fact we're going to go 20 days in a row starting Friday," Reds manager Dusty Baker said of Marshall. "It taxes the rest of the bullpen."

Marshall, 30, was unavailable much of last week because of fatigue in his shoulder. The club hoped rest would help, and it did not use Marshall until Sunday vs. the Nationals, when he pitched a perfect seventh inning with one strikeout.

"Monday, it didn't feel great," Marshall said. "I would've liked to have bounced back, but it was my first appearance in a while. We thought it was the best idea, because the bullpen has been pitching and working very hard, to have somebody fresh that's able to pitch consecutive days. I was close to being able to do that.

"I felt like it was in the best interest of myself and the rest of the guys to take this DL stint, and really continue to strengthen my shoulder and get it back to 100 percent and pitch the rest of the year without any problems."

The transaction is retroactive to Monday. Because Marshall pitched Sunday, the club could not backdate the move to before the beginning of the season.

An MRI was performed on Marshall's shoulder, but no structural damage was found.

"I know myself pretty well," Marshall said. "I've been ready to pitch almost every game for three or four years. My shoulder just didn't feel like its normal self."

Marshall has pitched 366 big league games over his career, including a team-leading 73 appearances last season. His only previous DL stint was in 2006 with the Cubs, when he suffered a strained oblique.

Ondrusek was one of the final cuts in Spring Training, during which he struggled. The club sent him to Double-A to work with pitching coach Tom Brown and try to get his stuff together again. Ondrusek worked 2 1/3 scoreless innings in three appearances for Pensacola.

"They said he's been throwing pretty good," Baker said.

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.