PITTSBURGH -- Because of a strained left groin, Reds shortstop Edgar Renteria remains unavailable to manager Dusty Baker. However, there are no apparent plans to place the veteran on the disabled list to make room for a healthy body on the roster.

"It's daily," Baker said of Renteria's status. "I was informed that Edgar could be back and ready in a couple of days. It's not easy playing short[handed], especially on the infield."

That issue surfaced during the sixth inning of Thursday's 3-1 loss to the Nationals. With runners on the corners and two outs, Baker wanted to pinch-hit for Paul Janish, but he had no true shortstop on the bench to replace him when the Reds were trailing 1-0 at the time.

The other shortstop options for Baker are not simple ones. Utility infielder Miguel Cairo had logged only one inning at the position last season and a total of 14 innings over four games since 2009. Rookie infielder Todd Frazier hasn't played short since 2008 at Class A Sarasota.

Frazier is ready and willing to give shortstop a shot again. As he sat on the bench Thursday, he thought that it might happen.

"I guess there was a chance in mind and I was ready for it," Frazier said on Friday. "It was my natural position. It's something that would be kind of exciting if you think about it. It would have been cool to play there again. I'm comfortable there. It's what I came up as. I'd be ready to do the job if called upon."

Frazier started at third base on Friday, but can play five positions in the infield and outfield. He has not taken any pregame ground balls at shortstop as of yet, though.

"I haven't really heard anything about it," Frazier said. "I will keep doing my thing at third base until I hear otherwise."

There are no pure shortstops at Triple-A Louisville either. Kris Negron has played 34 games there this season but is batting .201. Chris Valaika was drafted as a shortstop in 2006, but he has only played seven games there for Louisville this season.

Ondrusek could be activated Tuesday

PITTSBURGH -- Logan Ondrusek appears to be on track to return from the disabled list soon. The reliever, who has been on the 15-day DL since Aug. 9 with a strained right forearm, is eligible for activation on Tuesday.

"He could have been back realistically three or four days after he went on," Reds manager Dusty Baker said. "But we couldn't afford to go short."

Another reliever, Jared Burton, returned from his Minor League rehab assignment at Triple-A Louisville, but he has not been activated from the 60-day DL yet.

Burton has not pitched in the Majors all season after undergoing right shoulder surgery. He was 2-0 with a 6.00 ERA in seven appearances for Louisville.

"He was throwing the ball decent, to the best of my knowledge," Baker said. "He'd throw the ball good one day, the next day was off and then on again."

Top pick Stephenson reports to Arizona

PITTSBURGH -- Right-hander Robert Stephenson, the Reds top 2011 Draft pick, reported to his new team in Goodyear, Ariz., on Friday. Stephenson will be with the Arizona League Reds.

Stephenson will only get to be around for the final 10 days of the team's season after signing at the deadline late Monday night. While he could get some time in the instructional league this fall, the late signing essentially cost him his first pro season.

Stephenson's agent wasn't concerned that the delay would put the 18-year-old's career too far behind.

"We're not worried because he's such a self-starter," said Matt Sosnick, who also represents Reds players Jay Bruce and Dontrelle Willis. "He takes this so seriously. My sense is a lot of guys that fall behind do because of lack of preparation. He is so well prepared, whether it was his academic life or his baseball life."

Taken with the 27th overall pick out of Alhambra High School in Martinez, Calif., Stephenson received a $2 million bonus from Cincinnati. It was a deal that was reached just minutes before the deadline expired. Sosnick credited Reds senior director of amateur scouting Chris Buckley for helping make the signing happen.

"I've dealt with Chris a lot over the years," Sosnick said. "He's one guy who is super ethical. Whether the guy is signed or not, you know you'll get nothing but straight, direct and honest feedback from Chris Buckley. With our dealings with him, there was no doubt that it would get done."

Worth noting

• As part of his 15-game slate, former Reds star Sean Casey was back in the broadcast booth as a Fox Sports Ohio analyst on Friday. Casey will also work Sunday's series finale against the Pirates.

• Saturday's game has been picked up as a FOX national broadcast and was recently moved to 4:11 p.m. ET from the original 7:05 p.m. start time.