Rio Olympics: 5 must-watch events on day 11

America's sweetheart Simone Biles goes for gold number four, alongside Aly Raisman, in today's women's floor exercise final. Usain Bolt competes for the "triple-triple" in gold medals when the 200-meter qualifying starts this morning. Women's volleyball stars Kerri Walsh Jennings and April Ross aim to keep their undefeated streak going against Brazil's Barbara Seixas and Agatha Bednarczuk in semifinal play. Local stars Sue Bird and Tina Charles and the rest of the U.S. women, led by head coach Geno Auriemma, continue their defense of their 2012 Olympic title when they take on Japan. Gary Antuanne Russell will have America watching when he goes toe-to-toe with Fazliddin Gaibnazarv in the men's light welterweight quarterfinal.