Australian Open reaffirmed Rolex as the Official Timekeeper of the season-opening Grand Slam® tournament since 2008.

In tennis news, Coco Gauff is part of an elite group, Roger Federer's racket is special, and Serena Williams is a star once again.

Watch as Elmo sits in an umpire's chair and debates the two letters found on Federer's On-branded sneakers: Is it 'Q' and 'C' or 'O' and 'N'?

Roger Federer certainly had no problem occupying his time after finishing his professional career. The former world No.1 said ...