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9/7/2013 12:03 A.M. ET

Capuano day to day with mild groin strain

CINCINNATI -- Chris Capuano, starting in place of fellow Dodgers left-hander Hyun-Jin Ryu (stiff back), lasted just 1 2/3 innings on Friday against the Reds before exiting with a mild left groin strain, and manager Don Mattingly said his future status was uncertain immediately following the Dodgers' 3-2 loss.

"We won't know if he'll make his next start or not," Mattingly said. "We will know more tomorrow. Chris was throwing the ball good."

Capuano retired five of the first six batters he faced, but after recording his second strikeout on his 32nd pitch of the game, he was joined on the mound by catcher Tim Federowicz, head trainer Sue Falsone and Mattingly. After being examined, Capuano left the game and was replaced by right-hander Peter Moylan, who struck out Zack Cozart to end the inning.

Injuries are nothing new for Capuano, who has been on the disabled list twice this season. A left calf strain put him on the DL from April 17-May 6 before he missed almost three weeks from May 30-June 19 with a left shoulder latissimus strain.

In 21 appearances (19 starts) before Friday's abbreviated outing, Capuano was 4-7 with a 4.41 ERA.

Stephen Fife, making his first Major League relief appearance, took over to begin the third inning, working around a walk before giving up one run in the fourth. After walking Reds starter Mike Leake to open the fifth, he was replaced by J.P. Howell.

In nine previous starts this season, Fife was 4-3 with a 2.47 ERA. After being sent down in August, Fife rejoined the big league club on Sunday.

Kemp shut down with hamstring problems

CINCINNATI -- Dodgers outfielder Matt Kemp has been shut down indefinitely with a tight right hamstring.

"He's not having a very good couple of days here," manager Don Mattingly said before Friday's opener vs. the Reds. "He felt some hamstring stuff yesterday, so he didn't hit today. I would say he's slowing his roll a little bit."

Kemp is on the disabled list with an ankle sprain, but he was feeling discomfort in the hamstring he injured earlier in the year. He's been on a rehab assignment, but this setback will keep him out longer.

Mattingly said there's a possibility Kemp will not return this season.

"I don't like to concede anything," he said. "If the hamstring jumps back in there, we've got more issues."

Kemp's rehab this week shifted from Class A Rancho Cucamonga to the Dodgers' Spring Training complex in Arizona. Kemp had gone 0-for-18 with seven strikeouts in five rehab games with Rancho Cucamonga.

It's been an overall disappointing season for the two-time All-Star, who has been held back by injuries and appeared in only 62 games. Kemp is hitting .263 with five homers and 27 RBIs.

Jeremy Warnemuende is a reporter for MLB.com. Joey Nowak is a reporter for MLB.com. Follow him on Twitter at @joeynowak. This story was not subject to the approval of Major League Baseball or its clubs.