Serena Williams beats big sister
LONDON - Serena Williams extended her mastery over big sister Venus, and kept alive her bid for Grand Slam history. In the 26th career meeting between the siblings, Serena dominated with her steady serve and big hitting from the back of the court to win 6-4, 6-3 on Centre Court in 1 hour, 8 minutes, extending her Grand Slam winning streak to 25 matches. The win sent the top-ranked Serena into the Wimbledon quarterfinals as she bids for a fourth straight Grand Slam title, a feat last accomplished by the younger Williams in 2003. If Serena can triumph again, only the U.S. Open would stand in her way of becoming the first player to complete a calendar-year Grand Slam - a sweep of all four majors in the same season - since Steffi Graf in 1988.