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 ...

kid-on-the-rise, American vs. American at the U.S. Open on Friday night, and 29-year-old Andy Roddick got the better of 18-year-old Jack Sock. Roddick, the 2003 champion at Flushing Meadows who is ...