Querrey Previews Sock Vs Cilic Clash Nitto ATP Finals 2017 Nov 14, 2017 Singles alternate Sam Querrey gives his thoughts on the Group Boris Becker clash between Jack Sock and Marin Cilic, who both lost their opening matches at the Nitto ATP Finals. Tags: 2017 Jack Sock Marin Cilic Sam Querrey Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus