'First day back' for Serena Williams
Serena Williams grabbed her racket and got out on a tennis court Tuesday, which she said was her "first day back" after a series of health problems, including blood clots in her lung.
The 13-time Grand Slam singles champion and former No. 1-ranked player has not played an official match since she won the title at Wimbledon in July.
On Tuesday, Williams tweeted: "Cool news guys stay tuned.. Ill update u with a pic.. U ready??"
Then, a little while later, she tweeted again: "Look ...
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