(Reuters) - World number one Serena Williams added yet another record to her glittering tennis resume by becoming the earliest qualifier for the end-of-season WTA Finals.
The Australian and French Open champion, who is bidding for a rare calendar grand slam, booked a spot at the eight-woman championship in Singapore, still more than three months away, after her Wimbledon third round win over Britain's Heather Watson.
"I'm really thrilled to be the first player to qualify for the WTA Finals and I can't wait to return to Singapore to defend my title," Williams said in a WTA statement on Monday.