Roger Federer ‘stopped believing’ ahead of retirement as knee injury took toll

LEGEND: Roger Federer last week announced he will retire from professional tennis after the Laver Cup. Pic: John Walton/PA

Roger Federer has spoken of how injury forced his decision to retire, admitting he had “stopped believing”.

The 20-time grand slam champion announced last week that he would bring his professional tennis career to a close after the Laver Cup that starts in London on Friday.