Federer Happy With Good Start In London Nitto ATP Finals 2017 Nov 12, 2017 Roger Federer discusses his opening win at the Nitto ATP Finals against Jack Sock at The O2 in London. Watch the Nitto ATP Finals live on TennisTV.com. Tags: 2017 Interviews Nitto ATP Finals Roger Federer Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus