'Biggest Rivals, Best Mates': Rafael Nadal in Tears as Federer Bids Emotional Farewell to Tennis
Roger Federer, the first man to win 20 Grand Slam singles titles, announced his retirement from tennis last week. He played the last tennis match of his career on Saturday against Rafael Nadal, but lost to the pair of Jack Sock and Frances Tiafoe at the Laver Cup held at the O2 Arena in London.