Serena Williams made the most of her older sister's shaky serve and beat Venus 7-5, 6-3 Saturday to win the French Open in their second sibling Grand Slam final in nine months.

Serena won seven straight games at one juncture and broke Venus' serve six straight times to win the first set and go up 4-1 in the second in an error-filled match at Roland Garros.

Venus beat Serena 6-2, 6-4 to win her second U.S. Open last September, but on the slower clay, she couldn't find the consistency against her sister, who at age 20 is 15 months younger.

After holding serve to go up 5-3, Serena pumped her fists, knowing she was one game away from winning her first Grand Slam since capturing the 1999 U.S. Open.

She then broke Venus for the eighth time to complete the victory, holding her arms aloft, bending over at the waist and then going to the net to hug her sister.

Venus had nine double faults and 47 unforced errors. Serena double faulted five times and made 54 unforced errors.

Venus, who has four Grand Slam titles, and Serena practiced against one another just hours before Saturday's match just as they did Friday.

Venus leads the overall series 5-3. Their meeting at the U.S. Open was the first Grand Slam final meeting of siblings since Maud Watson beat sister Lillian at Wimbledon in 1884.