Olympic preview, Day 11

At ExCeL Exhibition Center: Dallas' Errol Spence Jr. is the lone U.S. boxer remaining in the Games. He'll face Andrey Zamkovoy of Russia in the quarterfinals of the welterweight division.

At North Greenwich Arena: Gabby Douglas competes in the balance beam in the individual finals. Teammate Aly Raisman, who missed bronze in the all-around, also competes on the beam. But her best chance for a medal could be on the floor exercise where she was a bronze medalist at last year's world championships. Jordyn Wieber competes in the floor exercise, her only event. In the men's events, Danell Leyva will compete on high bar with U.S. teammate Jonathan Horton of Houston.

At Olympic Stadium: The women's 100-meter hurdles offers a strong U.S. field, including Beijing gold medalist Dawn Harper, Kellie Wells and Lolo Jones. In the men's 1,500 meters, Leonel Manzano, a former Longhorn from Marble Falls, and Matt Centrowitz qualified for the final. Americans Erik Kynard, Jesse Williams and Jamie Nieto will compete for a medal in the men's high jump.

At Earls Court: The top-ranked U.S. women's volleyball team, 5-0 in pool play, plays a quarterfinal elimination match against the Dominican Republic.

At the Basketball Arena: The unbeaten and untested U.S. women's basketball team enters the knockout phase of the tournament against Canada.

Horse Guards Parade: Misty May-Treanor and Kerri Walsh Jennings reached beach volleyball's final four and are on track for a possible gold medal three-peat. The Americans face China's Zhang Xi and Xue Chen, the bronze medalists in Beijing, in the semifinals. Jen Kessy and April Ross of the U.S. play Brazil's Larissa Franca and Juliana Silva.

At the Aquatics Centre: Former Longhorn Troy Dumais will go for his first gold medal in four Olympic tries in the 3-meter springboard diving.

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