After winning her title Serena admitted that for the moment she is focussing on tennis.
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"Right now, tennis is my number one goal," said Williams. "I actually haven't done anything in acting in a while because I have been so focused.
"You know, I wasn't making as much money (acting). So I got to go back to the bread and butter.
"Like I always said I love tennis. I just love the sport. More than anything I love winning."
The rekindled desire to concentrate on tennis has delivered two titles this year with the first in Bangalore in India last month, while the victory in Miami equalled Steffi Graf's record of five titles.
"It should be named the Serena and Steffi stadium," Williams joked. "Steffi was my role model.