FILE – In this Jan. 28, 2018, file photo, Switzerland’s Roger Federer holds his trophy after defeating Croatia’s Marin Cilic in the men’s singles final at the Australian Open tennis championships in Melbourne, Australia. Federer leads the list with 20 Grand Slam singles titles. Rafael Nadal has 19. Novak Djokovic has 16.(AP Photo/Dita Alangkara, File)
