NEW YORK (AP) Li Na looked like a Grand Slam champion, while Laura Robson looked like a promising teenager.
The fifth-seeded Li avenged her third-round upset loss to the young Brit at last year's U.S. Open, winning in straight sets Friday at the same stage at Flushing Meadows.
Li, the 2011 French Open champ, rallied from down a break in the second set for a 6-2, 7-5 victory. A year ago, Robson's upset of Li was the biggest victory of her breakthrough run. Meanwhile, it was the third straight frustrating U.S. Open loss for the Chinese star.
Robson was ranked 89th coming into last year's tournament. She had never advanced past the second round at a Grand Slam event or defeated a top-10 opponent.
That all changed when she upset major champions Kim Clijsters and Li back-to-back to make the fourth round. Now 19, Robson was seeded 30th at Flushing Meadows and coming off a fourth-round run at Wimbledon.