An American 15-year-old has become Wimbledon's newest star after beating her idol Venus Williams in the first round. In an electrifying match, Cori 'Coco' Gauff, 15, beat the seven-time Grand Slam singles winner, 39, on Court One - less than a week after finishing her exams. Gauff beat the tennis legend, who had won four of her Grand Slam titles before she was even born, winning 6-4 6-4. The emotional teen, who is the youngest girl in 50 years to qualify for the tournament, revealed after the match that it was the first time she had cried from winning and...