On August 1, the first two players to qualify for the Championships were Justine Henin from Belgium and Jelena Janković from Serbia. Henin, last year's winner, leads the Sony Ericsson WTA Tour with nine singles titles already claimed in 2007, including French Open and US Open, and also titles in Dubai, Doha, Warsaw, Eastbourne, Toronto, Stuttgart and Zurich. Janković is the first Serbian woman representing her country to qualify for the season-ending event. This season, she has won four singles titles on the Sony Ericsson WTA Tour at Auckland, Charleston, Rome, and Birmingham. She also reached the semifinals at the French Open.
