Roger Federer

Federer won 20 Grand Slam titles, eight of them at Wimbledon, and his backhand is the most copied in recreational tennis. It ran on timing and disguise more than power, and the slice stayed so low it dared opponents to do something useful with it. He came through when the two-hander was already dominant and won everything with one hand anyway, so any coach telling a junior to switch has his whole career to argue with. He played his last match at the 2022 Laver Cup, in doubles with Nadal, who cried beside him.