Roger Federer leads the list of nominees announced Wednesday for the International Tennis Hall of Fame’s class of 2026. He…Roger Federer leads the list of nominees announced Wednesday for the International Tennis Hall of Fame’s class of 2026. He was the first man to win 20 Grand Slam singles titles and ushered in an era of unprecedented greatness with younger rivals Rafael Nadal and Novak Djokovic. Federer won 20 Grand Slam titles. 3, while reaching one other Grand Slam final, finishing as the runner-up to Djokovic at the 2018 U.S. Open.