John Isner

Sock of US overwhelms 2014 Open champ Cilic to reach 4th Rd

Before Jack Sock took on 2014 U.S. Open champion Marin Cilic in the third round, the 23-year-old American acknowledged that, as of a couple of years ago, simply making it that far would have made him, to use two of his words, "satisfied" and "excited."

Now Sock wants more. He thinks his game and his mindset are ready for deep Grand Slam runs. And the way he overwhelmed the No. 7-seeded Cilic 6-4, 6-3, 6-3 in a little more than 1 1/2 hours on Friday to reach the fourth round at Flushing Meadows for the first time, who would doubt Sock?

"Just all around, I think I'm putting things together, better and better," said the 26th-seeded Sock, who...

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