[Rusty Backhand]

The hot, humid, blustery weather that enveloped the U.S. Open on Wednesday was just another hurdle for Kim Clijsters to clear. ``It was tough, it was very tough,'' the fourth-seeded player said. But not as tough as Clijsters. The right-hander from Belgium is back at the National Tennis Center after missing last year's tournament due to left wrist surgery.

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