U.S. Open 2012 Scores: Jack Sock, 19-Year-Old American, Earns Huge Win At 2012 U.S. Open

19-year-old American Jack Sock earned a big U.S. Open win by defeating No. 22 seed Florian Mayer of Germany, 6-3, 6-2, 3-2, on Monday.

It was a relatively easy match for Sock, who had nine aces compared to two for Mayer and hit 34 winners, with Mayer hitting just eight in the match and easily handled the highly-ranked Mayer, despite 23 unforced errors. Sock also dominated on 2nd-serve points, something that has become a staple of his game over the past year. Sock's powerful serve would also prove to be too much for Mayer, with Sock averaging 109 m.p.h. on the match.

Sock will move on to face the winner of Slovenia's Blaz Kavcic and Italy's Flavio Cipolla in Round 2. This is Sock's second U.S. Open win after defeating in the first round in 2011 before losing to Andy Roddick in Round 2.

For the latest on all things tennis, be sure to check out SB Nation's dedicated tennis hub throughout the U.S. Open.