Roger Federer is the player who has won the most titles in Grand Slam tournaments (20) and who has participated in the most finals (31). In 2009 after the victory at the French Open, he completed the Career Grand Slam. In 2017, beating Marin Čilić in the final, he became the only man to have won Wimbledon eight times, the oldest and most prestigious tournament in the world.
The Swiss Maestro has huge popularity in the world of sport, to the point that he has been called a living legend in his own time. Given his achievements, Federer is widely considered to be one of the greatest tennis players of all time, with many players and analysts considering him to be the greatest tennis player of all time.
He has also been called the greatest athlete of his generation. Tennis.com listed him as the greatest male player of the open era. Despite his many successes, he also had to deal with some painful defeats.
Annacone on Roger Federer's mentality
Speaking in an interview on Tennis Channel, Paul Annacone and Severin Luthi reflected on Roger Federer's mentality and praised the way he hands his emotions.
"He is so good at being able to lose and also to win," Annacone explained. "One year  we were at Wimbledon and he was up two sets to love and lost to Tsonga. I remember coming back to the house and he just dropped his bags and got on the floor with his girls and started playing with them.
I thought that was so interesting that he was so happy. We went for a walk later because I wanted to talk to him about the match and I said: 'How do you get through it like this?' And he said: 'I've won a lot of titles, I've lost a lot of matches, I've won some but it balances out'
I think back to the match with Novak last year at Wimbledon. That's so painful." Luthi then added: "Sometimes you win matches you shouldn't, sometimes you lose matches you shouldn't. Don't get too negative on yourself and then maybe you get a second chance."