Sock Confident Ahead Of Miami 2017 Challenge Mar 23, 2017 American No. 1 Jack Sock hopes he can build on his semi-final showing at the BNP Paribas Open in the Miami Open presented by Itau. Watch live matches at tennistv.com. Tags: 2017 Interviews Jack Sock Masters 1000 Miami Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus