Williams ended 2002 by beating older sibling Venus in the finals of the last three majors: the French Open, Wimbledon and the U.S. Open. Now she has her eyes set on completing the "Serena Slam," which the world's No. 1 player will attain if she wins January's Australian Open. Venus has now dropped four in a row to Serena, and that doesn't bode well for the rest of the tour, considering older sis may be the only one who can pose a consistent threat at this point.