The Toyota Championships were the finales in an annual series of professional women's tennis tournaments for women from 1977 through 1982.
They operated in much the same way as the men's WCT Circuit which also had WCT seasonal finals held in the fall or winter.
The championships were discontinued when Virginia Slims became the year-round sponsor of the Women's Tennis Association Tour in 1983.
[1][2] The best singles and doubles players of the circuit, based on ranking points earned, qualified for the championships.
In 1990 a single unified women's circuit began, with a rebranded year end championship event called the WTA Tour Championships (today known as the WTA Finals)