Roger Federer as one of the finest sportsmen ever on Friday after the Swiss legend announced he will retire from tennis. The 41-year-old has struggled in recent years with knee injuries and will end his historic career after next week's Laver Cup in London. Prominent French sports newspaper L'Equipe, in a nod to the death last week of Britain's Queen Elizabeth II, went with the headline "God Save the King" together with a photo of Federer gazing thoughtfully skywards. "His entire game bordered on art and the sublime," L'Equipe said, debating whether he was the greatest sportsman of all time, up there with the likes of Pele, Muhammad Ali, Usain Bolt and Michael Jordan. Spain's El Pais said that Federer's announcement was not a surprise but "that does not make it any less painful".