The Cincinnati Masters is an annual tennis event held in the Cincinnati suburb of Mason, Ohio, USA. The event started on September 18, 1899 and is today the oldest tennis tournament in the United States played in its original city.
The men's event is one of nine ATP Masters Series tournaments on the Association of Tennis Professionals (ATP) tour. The women's event is the only Sony Ericsson WTA Tour event held in the American Midwest. Currently it is a Tier III event on the WTA Tour. The men's and women's events are currently played in separate weeks during the July-August period. The competition is played on outdoor hardcourts. Because of its sponsorship by the Western & Southern Financial Group, the official names of the men's and women's tournament are the Western & Southern Financial Group Masters and the Western & Southern Financial Group Women's Open.
