WIMBLEDON, England -- The Wimbledon doubles final won by Serena and Venus Williams drew higher TV ratings than the men's singles final.

NBC's broadcast Sunday averaged a 3.1 overnight rating from 9 a.m. to 3 p.m. ET, up slightly from the 3.0 for the network's show that included the men's final last year, when rain pushed the match to Monday and it was aired on tape delay.

No. 1-ranked Lleyton Hewitt's 6-1, 6-3, 6-2 victory over David Nalbandian drew ratings that ranged from 2.6 to 3.1 each half hour until noon Sunday.

But NBC's top half-hour ratings for its show -- 3.8 to 4.0 -- came later in the afternoon, while the Williams sisters were beating French Open champions Paola Suarez and Virginia Ruano Pascual in straight sets.

The women's singles final show Saturday produced a 4.6 overnight rating.

The rating is the percentage of all homes with TVs, whether or not they are in use. Overnight ratings measure the 53 largest TV markets in the United States, covering about 65 percent of the country.