Olympic Tennis: Serena Williams Beats Jelena Jankovic In First Round

07/28/2012 10:22 am ET

WIMBLEDON, England -- Serena Williams advanced to the second round at the Olympics on Saturday on the same Wimbledon court where she won her 14th Grand Slam title a few weeks ago.

U.S. First Lady Michelle Obama watched from the front row of Williams' box as the fourth-seeded American beat former No. 1 Jelena Jankovic of Serbia 6-3, 6-1 on Centre Court.

Williams is aiming for her first gold medal in Olympic singles; she has won two gold medals in doubles with big sister Venus.

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