Arizona Wildcats defensive tackle Willie Mobley will miss the start of the 2011 season and could miss more time, after suffering a severe knee injury.

A UA spokesman confirmed Monday afternoon that Mobley tore his ACL playing basketball at the campus recreation center. He will undergo surgery soon and could miss up to six months.

Coaches were expecting big things from Mobley, a transfer from Ohio State who was expected to back up starter Justin Washington this fall.

Mobley played in 10 games as a sophomore in 2010, registering seven tackles and 1 1/2 tackles-for-loss and half of a sack. The 6-foot-2-inch, 280-pound Mobley had three tackles in last month's spring game.

Mobley is the fourth UA player to injure his ACL this spring. Safety Adam Hall, running back Greg Nwoko and linebacker Jake Fischer are all expected to miss the start of the season after suffering knee injuries in spring drills.


ICU, ex-teammate support Armstrong

LONDON - In the wake of fresh doping allegations against Lance Armstrong, cycling's world governing body and one of his former teammates have come to the defense of the seven-time Tour de France champion.

Tyler Hamilton, another ex-teammate of Armstrong, alleges the American was involved in a systematic doping program with the U.S. Postal team to win the 1999, 2000 and 2001 Tours.

However, team rider Viatcheslav Ekimov says he never saw Armstrong do any of the things Hamilton described.

Also Monday, the International Cycling Union denied claims it helped cover up a positive sample submitted by Armstrong at the Tour de Suisse in 2001.

Auto racing

Ex-driver Pearson tops NASCAR honorees

CHARLOTTE, N.C. - David Pearson headlined a five-member class that entered the NASCAR Hall of Fame on Monday.

Pearson, winner of three championships and 105 races, was inducted with 84-race winner Bobby Allison, Petty Enterprises patriarch and three-time Cup champion Lee Petty, Bud Moore, a decorated World War II veteran and two-time Cup championship team owner, and two-time champion and noted broadcaster Ned Jarrett.

• Former Formula One world champion Kimi Raikkonen will make his Nationwide Series debut on Saturday at Charlotte Motor Speedway.

After a disastrous weekend for Michael Andretti's IndyCar team, he and his father's old rival have reached a deal to get Ryan Hunter-Reay, the only American to win an IndyCar race since April 2008, into A.J. Foyt's No. 41 car for Sunday's Indy 500


UA's Boineau receives honor from coaches

Arizona Wildcats women's golfer Isabelle Boineau was named a second-team All-American and All-West Region on Monday by the National Golf Coaches Association. Boineau, a junior, finished in the top 10 of tournaments eight times this season.

• Steve Johnson and Daniel Nguyen earned wins as second-seeded USC beat Georgia 4-0 Monday to reach its third straight NCAA championship tennis match.

• Tennessee fired baseball coach Todd Raleigh on Monday after the Volunteers failed to reach an SEC or NCAA tournament in his four seasons.

Ryan Finley Includes material from a news release