Roger Federer will miss the US Open and be out for ‘many months’ after deciding to have a third operation on his right knee. The Swiss said the procedure will give him with “a glimmer of hope” of a return to competition. He said: ‘I will be on crutches for many weeks … I am realistic … I know how difficult it is at this age.’ Federer, 40, who has 20 grand slam singles titles, acknowledged there was a chance his playing career could be over but is hopeful of a successful rehabilitation
