BOULDER, Colo. - Colorado junior forward Andre Roberson, the nation's second-best rebounder, canceled a news conference Friday to discuss whether he will turn pro or return to the Buffaloes for his senior season.

"It's a difficult decision for Andre. He's just not there yet," Colorado basketball coach Tad Boyle said. The deadline for non-seniors to announce their status is Sunday.

• Miami sophomore point guard Shane Larkin is leaning strongly toward turning pro and will declare for the NBA draft unless he has a last-minute change of heart, said his father, Baseball Hall of Famer Barry Larkin. ... UConn guard Shabazz Napier said he will pass on the draft and play his senior season.

• Sophomore forward Hunter Mickelson is transferring from Arkansas to Kansas, where he will sit out next season and have two years of eligibility remaining.

• Louisville coach Rick Pitino kept his promise Friday to get a tattoo if the Cardinals won the NCAA title. It adorns his left shoulder blade, with the school's "L" emblem in red and the words "2013 NCAA champions, 35-5."

Auto racing

Keselowski hangs on to win Nationwide race

RICHMOND, Va. - Brad Keselowski ducked underneath Kyle Busch to take the lead with 10 laps to go Friday night and won a wild NASCAR Nationwide Series race at Richmond International Raceway.

Keselowski had to hold off a final charge from Kevin Harvick, but after Harvick closed within a few car lengths, Keselowski kept him at bay and slightly expanded his margin in the final laps to win his 21st race in the series. Harvick, who led four times for a race-high 96 laps, was followed across the finish line by Busch, whose streak of three straight Nationwide wins came to an end.

• Matt Kenseth didn't wait long to get his pole award back. The Joe Gibbs Racing driver stripped of his pole award from last week at Kansas in a raft of penalties levied by NASCAR, set a Richmond track record Friday with a lap at 130.334 mph. He edged JGR teammate Brian Vickers to claim his 10th career pole in 481 starts.


Cuba ends half-century ban on pro boxing

HAVANA - Cuba is breaking a five-decade ban on professional boxing and joining an international semipro league. Fighters will compete for sponsored teams, box without headgear and earn $1,000 to $3,000 a month.

• After a rain delay, Rafael Nadal won back-to-back matches to advance to the semifinals of the Barcelona Open on Friday. He beat Benoit Paire 7-6 (2), 6-2 and Albert Ramos 6-3, 6-0. Nadal faces Milos Raonic today.

• Maria Sharapova outlasted Ana Ivanovic 7-5, 4-6, 6-4 on Friday to advance to the semifinals of the Porsche Grand Prix in Stuttgart, Germany, against Angelique Kerber. Bethanie Mattek-Sands, a U.S. qualifier, beat Sabine Lisicki 6-4, 6-2 and faces Li Na next.

• In soccer, Liverpool striker Luis Suarez said Friday he will not appeal a 10-match ban for biting an opponent during a Premier League game.

• In Des Moines, Iowa, Andrew Riley beat London Olympic champion Aries Merritt in the 110-meter hurdles (13.43 seconds) at the Drake Relays on Friday night.

• Three-time Kentucky Derby-winning jockey Calvin Borel and horses Housebuster, Invasor, Lure, McDynamo and Tuscalee were elected Friday to the National Museum of Racing and Hall of Fame.

• UA tennis players Lacey Smyth and Kim Stubbe won their first-round singles matches at the Pac-12 tourney, but were ousted in the round of 16 Thursday in Ojai, Calif.

Includes material from a news release