When the Orioles claimed left-handed pitcher Jo-Jo Reyes off waivers from the Toronto Blue Jays last week, the thought was that he'd pitch for a while in the bullpen and maybe get another crack at a starting job later this season.

That plan lasted less than a week.

The 26-year-old Reyes, who was 5-8 with a 5.40 ERA in 20 starts for the Blue Jays this year, was named the Orioles' starter for Tuesday night against the Chicago White Sox at Camden Yards.

"It's nothing new, so I am going to feel comfortable out there," said Reyes, who has also made 32 starts with the Atlanta Braves in his five-season career. "I am just going to go out and pitch like it is any other start."

Reyes has pitched just one game with the Orioles, entering a bases-loaded jam in the eighth inning Wednesday. He retired both batters he faced.

"The first day was opportunity," Reyes said. "I got in there the first day, and every time I get the ball it's an opportunity for me."

With injuries and ineffectiveness swirling around the rotation, the Orioles had few options for Tuesday's start, so Reyes became the obvious candidate.

"We'd like to see him, get our arms around what he could bring, comparatively speaking," Orioles manager Buck Showalter said. "He's here. He's obviously thrown multiple innings this year. I think he's very similar to Tommy [Hunter] and the way you can use him. So we thought of the options available and where we were with some of the moving parts the past few days. It was the best option."

Showalter said how long Reyes remains in the rotation depends on how well he performs. Reyes is fine with that.

"Whatever they want me to do, I am going to do. But in the bullpen it is a different look. It's a new home, I guess you could say," Reyes said. "I like starting and I will do whatever they need me to do, whether it's for one or two starts or three starts or for the rest of the season. I am going to do my best."

Izturis placed on DL; Berken recalled

Infielder Cesar Izturis, who came off the disabled list Friday after missing nearly three months due to right elbow surgery, was placed back on the disabled list Monday because of a strained left groin.

Izturis injured his groin running to first base in the third inning Sunday and left the game in the fifth. He was hoping to avoid the DL, but he wasn't improving. Izturis, who hit .200 (6 for 30) in 18 games this season, will have a MRI on Tuesday.

To fill his roster spot, the Orioles recalled right-handed reliever Jason Berken from Triple-A Norfolk. This will be Berken's third stint in the majors this season. He is 1-2 with a 6.27 ERA in 31 games for the 2011 Orioles.

Hardy returns to lineup

Orioles shortstop J.J. Hardy, who has not played since leaving Thursday's game in Kansas City due to a left ankle injury, was back in the starting lineup Monday.

"Got here early, went through my treatment stuff, warmed it up, taped it and went outside and basically tested it doing all the things that it hurt me to do in Kansas City," said Hardy, who grounded out to the pitcher in his first at-bat Monday. "And it felt fine."

The injury is still a bit of a mystery to Hardy. He's not sure when or how it occurred. He began feeling a pain in the front of his ankle on Wednesday, kept playing with it and, by Thursday, he had discomfort in the back of his foot.

"It started up front and worked its way to the back, so I think by me favoring whatever was going on in the front, I think I hurt the back a little bit," Hardy said. "But taking off these last three days, I think was a pretty good idea and it feels good now."

Davis improving, wanted to start Monday

First baseman Chris Davis (right shoulder strain), who hasn't been in a game since Thursday in Kansas City, took batting practice and said he was ready to play. But the club held him out of the starting lineup for one more game, delaying his Orioles' debut at Camden Yards.

"I'm not as far down the line on [Davis] that I am on J.J," Showalter said. "But I think Chris is real close to being available."

Davis had fun with a pre-game interview seeking incremental updates on his health.

"I'll probably be out for the next 10 years," Davis joked. "I'm thinking about taking up fly-fishing or becoming a professional drag-racer."

Around the horn

Right-hander Jake Arrieta will fly toCalifornia on Tuesday at 5 p.m. and will be examined by Los Angeles Angels team physician Lewis Yocum on Wednesday at 10:30 a.m. If Yocum decides the bone spur in Arrieta's elbow needs to be removed — which Arrieta expects to be the case — surgery will occur on Friday. Arrieta expects to stay inTexas rehabbing and waiting for his wife to give birth to the couple's first child later this month. He expects to begin throwing again in late November or early December and be ready for spring training. … The anti-inflammatory medication seems to be working on Zach Britton's left shoulder, Showalter said. He is expected to pitch Sunday in a doubleheader for Bowie. … Four Aberdeen IronBirds were named to theNew York-Penn League All-Star game: Pitcher Trent Howard, infielder Joe Velleggia (Calvert Hall), second baseman Dudley Leonora and outfielder Glynn Davis (Northeast High, Community College of Baltimore County).

dan.connolly@baltsun.com