NETS SIGN ARMSTRONG: The New Jersey Nets signed veteran guard Darrell Armstrong on Friday. Armstrong, who was the third oldest player in the NBA at 39 last season, was cut by Indiana earlier this week.

MAY OUT FOR SEASON: Charlotte Bobcats forward Sean May will miss the season after deciding to undergo microfracture surgery on his troublesome right knee. May will have the surgery Tuesday in New York. Recovery will take six to 12 months.

LAKERS HURT: Luke Walton and Derek Fisher sustained minor injuries Friday during Lakers' training camp in Hawaii. Walton strained his right hamstring and is listed as day-to-day. Fisher received a deep, 1-inch gash to the forehead when he took an elbow from center Larry Turner. Fisher did not require stitches.

Auto racing

PENALTY AVOIDED: Formula One drivers' championship leader Lewis Hamilton was spared a penalty Friday after an investigation of his driving during last week's Japanese Grand Prix.

The McLaren driver, Toro Rosso's Sebastian Vettel and Red Bull's Mark Webber, plus team officials, met stewards at the Chinese Grand Prix and watched the Japan race, including amateur footage of an accident that sparked the investigation.


VENUS IN FINALS: Top-seeded Venus Williams defeated Denmark's Caroline Wozniacki 6-3, 7-5 on Friday to advance to the final of the Japan Open. Williams will face fifth-seeded Virginie Razzano in Saturday's final after the Frenchwoman beat Flavia Pennetta of Italy 4-6, 7-5, 6-3.


WIRTZ HAND-OFF: Peter Wirtz resigned as vice president of the Chicago Blackhawks on Friday and his older brother, Rocky, took over as the team's chairman. The change comes after the death last month of their father and longtime Blackhawks chairman, William Wirtz. Peter Wirtz, 47, will run Bismarck Enterprises, one of the family's food service businesses. Rocky Wirtz, 55, is expected to do a complete evaluation of the team.