A USA vs. USA final in the most interesting tennis Olympic event -- mixed doubles -- was decided on a dramatic, enlongated tiebreaker.
Jack Sock and Bethanie Mattek-Sands toppled Venus Williams and Rajeev Ram, winning the tiebreaker 10-7 (7-6), and taking the ultimate match two sets to one. Mattek-Sands and Sock rallied after falling in the first set, then came back from a three-game deficit in the third set.
For Williams, one of the best tennis players of her generation, it could mean her final Olympic competition.