There were some formidable options like Jo-Wilfried Tsonga, Ivo Karolovic, Jack Sock and Fernando Verdasco. And there were some more jokey ones like Alexander Zverev and Grigor Dimitrov.

STOCKHOLM (AP)—Defending champion Grigor Dimitrov advanced to the quarterfinals ... In first-round matches, Jack Sock of the United States defeated Andrey Golubev of Kazakhstan in three sets ...

ROME (AP) Gilles Simon of France took advantage of a few key double-faults by Jack Sock and rallied for a ... Tenth-seeded Grigor Dimitrov also played cleanly in a 6-3, 7-6 (4) win over Jerzy ...