Serena Williams is once again considering a comeback in tennis; the superstar claims that the chances of her competing are "very high" and that she is NOT retired. After 27 years of playing tennis, Williams announced in August that she was "evolving away" from the sport and that her final match would be at the U.S. Open. Williams has previously made hints about coming back; in September, she specifically referenced Tom Brady while discussing a potential return. “I mean, you never know. I’ve just been saying that Tom Brady started a really cool trend..." said Williams on Good Morning America.