Roger Federer has described the moment he was pictured holding hands with Rafael Nadal after his final ever match in competitive tennis as 'a secret thank you' for the moments they shared in the sport. The tennis legend brought a 24-year-long career to an end on Friday night alongside the Spaniard at the Laver Cup, with the 41-year-old understandably emotional at the thought. Federer is considered by many to be the greatest tennis player of all time, given his dominance of the sport for so long in the 2000s.