American Alison Riske Makes US Open Round Of 16Maybe's Riske's incredible run isn't that much of a surprise considering her recent surge.
Li Na Avenges Loss To Laura Robson In US Open 3rd Round The fifth-seeded Li avenged her third-round upset loss to the young Brit at last year's US Open, winning in straight sets Friday at the same stage at Flushing Meadows.
Serena, Nadal Cruise, 17-Year-Old Duval Falls On Day 4 Of US OpenOnly a few spots separate them in the seedings. Still, the considerable gulf between No. 1 Serena Williams and No. 4 Sara Errani was hard to ignore in their matches Thursday at the U.S. Open.
Liguori: Americans Take Center Stage On Second Day Of US OpenAmericans Andy Roddick, Venus Williams, Sam Querrey and Dennis Novikov all won on the second day of the US Open.

Watch & Listen LIVE