Gabby Douglas and Aly Raisman are top contenders in the all-around final in women's gymnastics. Also: swimming finals (men's 200m back and 200m IM; women's 200m breast and 100m free); rowing (women's eights final); and men's volleyball (U.S. vs. Brazil). The men's 200IM is expected to include the final duel between Michael Phelps and Ryan Lochte.