Federer has little trouble advancing at the U.S. Open

Cilic, the lanky 27th seed, had his chances but could convert only two of nine break-point chances against the third-seeded Swiss. The Croat double-faulted at set point in the third set and never recovered.

In the round of 16 Federer will face either Argentine Juan Monaco or Tommy Haas of Germany.

(Reporting by Steve Ginsburg, Editing by Larry Fine)