Nadal moves into 3rd round at Wimbledon

By the Associated Press | June 22, 2011 | 2:00 PM EDT

Spain's Rafael Nadal returns a shot to Ryan Sweeting of the US at the All England Lawn Tennis Championships at Wimbledon, Wednesday, June 22, 2011. (AP Photo/Kirsty Wigglesworth)

WIMBLEDON, England (AP) — Rafael Nadal improved his winning streak at Wimbledon to 16 matches after beating Ryan Sweeting of the United States 6-3, 6-2, 6-4 Wednesday under the roof on Centre Court.

The top-seeded Spaniard had already beaten his 23-year-old opponent twice in straight sets this year.

Nadal made only seven unforced errors, although the 69th-ranked Sweeting managed to break once in the third set.

Defending champion Nadal hasn't lost a match at Wimbledon since he was beaten by Roger Federer in the 2007 final. He won in 2008 but missed out on defending his title because of injury.