Friday 17 November 2017 17:57, UK
Roger Federer is into the last four of the ATP Finals event in London and he gave Sky Sports' Annabel Croft a sneak peek of his private locker room at The O2.
The tournament is one of only three on the ATP Tour where the players do not share a locker room and the 36-year-old admitted he is ambivalent about having his own space, admitting he "misses the guys" although it does give him a chance to talk tactics and enjoy team bonding with his coaches.
Annabel also gets the former world No 1 to rifle through his kit bag, where he talks her through how his rackets are strung and the different tension options, depending on who he is playing.
He also shows off his awards, his personally customised wall and reveals what he eats straight after a match. And when quizzed about who he would pay to see in an arena such as The O2, he admits Justin Beieber "would make my wife happy!"
Click on the video above to see Annabel's full interview with Federer in his locker room.
The season-ending extravaganza ATP Finals ends another memorable year which will be covered via our website www.skysports.com/tenniswith live blogs, reports, reaction and expert analysis as the season reaches its climax.
