Touted freshman Ellis McCarthy out with knee injury

UNIVERSAL CITY, Calif.--Defensive lineman Ellis McCarthy, the highest-rated defensive recruit in UCLA's incoming freshman class, underwent arthroscopic surgery on his left knee Friday and will miss the first part of training camp, coach Jim Mora said Tuesday.

McCarthy, 6 feet 4, 305 pounds, was ranked as the No. 4 defensive tackle in the nation and was No. 43 in the ESPNU150 for the class of 2012. Mora said the injury was a lingering issue that needed to be addressed before McCarthy took the field for UCLA.

"It’s nothing serious, we just have to proceed with caution early in camp," Mora said.

In other injury news, linebacker Mike Orloff has taken a medical retirement because of a balky knee, Mora said. Orloff, a redshirt freshman, did not appear in a game for UCLA last season after undergoing surgery on the knee.

It wasn't all bad news on the injury front, however, as several players who missed all or part of spring camp have been cleared for the fall. They include: linebacker Patrick Larimore (concussion), linebacker Jordan Zumwalt (bruised kidney), receiver Ricky Marvray (back surgery) and offensive lineman Chris Ward (knee).

Mora also said that Dietrich Riley, out since a scary neck injury against California last Oct. 29, will not play this season despite showing signs of improvement after neck surgery in April. Riley had Tweeted last week that he got good news, leading some to believe he might be able to play this season, but Mora said that isn't going to happen.

"He’s doing fine, but he’s not going to play this year," Mora said. "The earliest we’re going to see him is spring. We’ve got to do what’s right for him. You know how kids that age are, they feel like they’re invincible and they start to feel really good and think they can do more than they can and we have to protect them from themselves sometimes. I will not let him out there until the spring."