Williams, the No. 1 ranked woman player in the world, defeated Petra Kvitova 7-6 (7-5), 6-2. She will be seeking her fourth Wimbledon singles title Saturday when she plays 21st-seeded Vera Zvonareva.
Zvonareva earned her first Grand Slam finals slot with a 3-6, 6-3, 6-2 win over unseeded Tsvetana Pironkova.
Williams suffered an early service break against Kvitova but that was the only time she dropped serve. Williams had a relatively lower number of winners (19) but only committed 14 unforced errors.
Zvonareva also dropped serve just once in her match and faced just two break-point situations after the first set. It was a well-played match with 29 unforced errors between the players, but Zvonareva had 31 winners to Pironkova's 23. Nearly half of Pironkova's winners came in the first set.
Zvonareva ended with three service breaks. The first came in the sixth game of the second set for an important edge there. The second came in the first game of the third set, putting Zvonareva in control of the match.
Williams won at Wimbledon in 2002 and 2003 in addition to last year. She owns 12 Grand Slam titles, including this year's Australian Open championship.
Copyright 2010 United Press International.