Dokic no match for WTA champion Serena

World number one Serena Williams pounded a weary Jelena Dokic 7-6, 6-0 on Saturday to move into the semi-finals of the $3 million WTA Championships and towards a possible season-ending showdown with her sister Venus.

Looking to cap a memorable year by adding a second WTA title to three grand slam wins, defending champion Serena next meets third seed Jennifer Capriati, who booked her place in the last four with a 6-2, 4-6, 6-1 win over unseeded Bulgarian Magdalena Maleeva.

Sunday's other semi-final will pit Venus Williams, who lost to her younger sister in this season's Wimbledon, French and U.S. Open finals, against fifth seed Kim Clijsters of Belgium.

Playing her first tournament since lifting her season-leading eighth title six weeks ago in Leipzig, Serena took exactly one hour to dispose of Dokic, who was playing in her 29th event, as many as the Williams sisters combined.

Wearing the skin-tight black catsuit that set the tennis fashion world abuzz at the U.S. Open, Williams made a shaky start as Dokic registered the early break and bolted in to a 3-0 lead.

Williams broke back but continued to struggle, unable to stamp her authority on the contest until the tie-break which she swept 7-1, Dokic double-faulting on the first set point.

The effort appeared to deflate Dokic, the eighth-seeded Yugoslav offering only token resistance the rest of the way as Williams raced through the second set in just 20 minutes.

It was Williams's third win in as many meetings with Dokic, who has yet to take a set from the 21-year-old American.