Claim: Heather Watson is a professional athlete.
Evidence: On 14 October 2012 , Watson won her first WTA singles title with a win over Chang Kai-chen of Taiwan in the final of the Japan Open , becoming the first British female to win a WTA singles title since Sara Gomer in 1988.
The Women 's Tennis Association -LRB- WTA -RRB- , founded in 1973 by Billie Jean King , is the principal organizing body of women 's professional tennis.