Andy Murray won his opening match Friday at the Sony Ericsson Open by beating Alejandro Falla 6-2, 6-3.
Murray, the 2009 champion, bounced back from a loss in his first match at Indian Wells two weeks ago. He also avoided a repeat of last year, when he lost his opening match at both Indian Wells and Key Biscayne.
With the victory, the No. 4-seeded Murray improved to 15-3 this year.
On the women's side, No. 15 Ana Ivanovic lost only six points on her first serve and beat American Vania King 6-4, 7-5. Ivanovic was playing for the first time since she retired with a left hip injury a week ago at the Indian Wells semifinals.
Two wild cards eliminated seeded women. Garbine Muguruza Blanco of Spain upset No. 9 Vera Zvonareva 6-4, 6-3, and Aleksandra Wozniak of Canada rallied past No. 28 Monica Niculescu 4-6, 6-3, 6-4.
Rafael Nadal, John Isner and top-ranked Victoria Azarenka were among those scheduled to play later Friday.
