all WTA tournaments in China, including Hong Kong", over concerns of Chinese government's treatment of tennis player Peng Shuai after she accused a top Communist Party leader of sexual assault. Format From 1984 to 1998, the final of the championships was a best-of-five-sets match, making it the only tournament on the women's tour to have had a best-of-five match at any round of the competition. It was the first time since the 1901 U.S. National Championships that the best-of-five format was used in women's matches. In 1999, the final reverted to being a best-of-three-sets match. From the 1974 until the 1982 edition the doubles draw consisted of four teams; then from 1983 to 2002 the draw increased to eight teams; was decreased back to four teams until 2013 and from the 2014 edition onward it has been made up of eight teams. From its first inception in 1973 until 2018 the doubles draw was played in a single elimination format. In 2015 and from 2019 until the present the doubles draw has been played in a round robin format. Qualified players and teams participate in a round-robin format in two groups of four. The winners and runners-up of each group advance to the semifinals. The semifinal winners progress through to the finals where they compete for the title. Qualification To qualify for the WTA Finals, WTA players compete throughout the year in over 53 WTA tournaments throughout the world, as well as the four Grand Slam events. Players earn ranking points on the Porsche Race To Shenzhen leaderboard, and the top 7 singles players (and usually top 8) and top 8 doubles teams on this leaderboard at the conclusion of the year (as of the Monday following the final regular season tournament) earn the right to compete in the WTA Championships. For singles, all results from that year count towards a player's ranking. The eighth spot in singles is not guaranteed a place in the finals as the WTA has some leeway per the WTA rules. In the singles, point totals are calculated by combining point totals from 16 tournaments (excluding ITF and WTA 125 tournaments). Of these sixteen tournaments, a player's results: from the four Grand Slam events, the four WTA 1000 tournaments with 1,000 points for the winner, and (for the players who played the main draw at least in 2 such tournaments) the best results from two