Slam with the French Open victory. During the tournament, Sharapova was asked by the Russian Olympic Committee to bear the flag at the opening ceremony for the 2012 Summer Olympics, becoming the first female Russian athlete to receive this honor. Sharapova decided not to compete in any of the grass-court warm-up events and instead proceeded straight to the Wimbledon Championships, where she was the top seed at a major event for the first time since the 2008 French Open. She breezed through her first three matches over Anastasia Rodionova, Tsvetana Pironkova and the crafty Hsieh Su-wei, extended her winning streak to 15 matches. However, she was upset in the fourth round in straight sets by the 15th-seeded Sabine Lisicki, whom she beat in the previous year's semifinals. Due to being unable to defend her finalist points from the year before, she relinquished the world No. 1 ranking back to Azarenka. She made her Olympic debut at the 2012 Summer Olympics in London and was seeded third in the singles draw. She easily beat Shahar Pe'er and hometown favorite Laura Robson in straight sets, before avenging her defeat against Lisicki four weeks prior by beating the German in the third round in a tight three-set match. In the quarterfinals, Sharapova defeated fellow former No. 1, Kim Clijsters, to advance to the semifinals, where she faced her compatriot, Maria Kirilenko. Sharapova defeated Kirilenko to reach the Olympic final and guarantee a medal. Facing off against rival Serena Williams, with both players looking for their first Olympic singles gold medal (and a chance to complete a career Golden Slam), Sharapova was thrashed by Williams in what was to be her worst defeat to the American, winning only a single game. Nonetheless, with this performance, Sharapova won an Olympic silver medal and overtook Agnieszka Radwańska as world No. 2. Sharapova did not compete in any of the summer hard-court warm-up events after the Olympics, pulling out of both Montreal and Cincinnati (where she was the defending champion) due to a stomach virus. Seeded third at the US Open, Sharapova breezed through her first three matches against Melinda Czink, Lourdes Domínguez Lino, and Mallory Burdette, losing a total of just seven games. In the fourth round, compatriot Nadia Petrova took it to a third set and was winning until a rain delay. After the delay, Sharapova came back to win, advancing to the quarterfinals of