The WTA Tour Championships is a tennis tournament played annually at the end of the season for
the top-ranked players on the Women's Tennis Association (WTA) tour. Since 2003 there have been
eight singles players divided into two groups, and four doubles teams. The WTA Tour Championships is
generally considered to be the fifth most prestigious event on the women's tour after the four Grand
Slam tournaments. It also has the largest prize money and ranking points after the Grand Slams.