Serena Williams wins Olympics opener
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.
US 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.