Rafael Nadal looked quite comfortable in his return to the U.S. Open, beating American Ryan Harrison in straight sets.
The second-seeded Spaniard won 6-4, 6-2, 6-2 in the first round Monday. Nadal, the 2010 champion, skipped last year's U.S. Open because of a left knee injury. He was playing his first Grand Slam match since an opening-round loss at Wimbledon.
Nadal improved to 16-0 on hard courts this year. The 21-year-old Harrison is 0-20 against top-10 opponents.
Both players had 28 winners, but the 97th-ranked Harrison had made 34 unforced errors to 21 for Nadal. The 12-time major champion pounced on Harrison's second serve, winning 71 percent of the points on it. And with Harrison getting in just 62 percent of his first serves, Nadal had plenty of chances to break.