After defeating his fellow Nebraskan at the U.S. Open, Andy Roddick invites Jack Sock to train with him at Roddick's home in Austin.

"I watched him a lot. To be able to play him was the best tennis experience of my life," said Sock. "I mean, yeah, we're pretty good friends. I think being from Nebraska helps, both of us. But I think we probably got closer after the match tonight as friends.

"He said on the court that I'll be out on that court many more times. Got a bright future. Then invited me to Austin to practice."

Roddick said he was following the example of Andre Agassi, who practiced with him when he was a junior.

"I certainly feel the need to pay it forward," said Roddick. "This game has been great to me. It's pretty much an impossibility for me to do it... as far as leaving it better than when you came—when I came it was the best generation that has ever existed in a country. But I enjoy having the young guys at home.

"It's inspiring for me. You can kind of feed off of their hunger a little bit."

But it can only take a player so far, he added. "I mean, I certainly benefited from it, but I've had 25 up and coming prospects at my house. We'll see how many get through," said Roddick. "Just because they come and visit for a little while doesn't mean they'll automatically make it. I don't know how much I know about anything, but I'm certainly happy to share what I do if they want to listen."