Tennis | Roger Federer and Serena Williams' retirements signal end of era for tennis

By Tony Fairbairn Roger Federer announces Laver Cup will be his last ATP event of his career LONDON, ENGLAND – Next week's Laver Cup at the O2 Arena will be Roger Federer's last ATP event of his career as his and Serena Williams' retirements signal the end of an era for Tennis.

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