U.S. cyclist wins gold

Kristin Armstrong became the second American female cyclist to win an Olympic gold, beating Britain's Emma Pooley in the road time trial.

Armstrong joined only Connie Carpenter-Phinney, who won the road race at Los Angeles 24 years ago, as U.S. women's cycling gold medalists.

Levi Leipheimer won the bronze in the men's time trial to move USA Cycling within 1 medal of tying its haul from the 2004 Athens Olympics.