Cincinnati Masters

The Cincinnati Masters is an annual outdoor hardcourt tennis event held in Mason near Cincinnati, Ohio. The event started on September 18, 1899 and is the oldest tennis tournament in the United States played in its original city.The tournament is the second largest summer tennis event in the U.S. after the U.S. Open, as its men's portion is one of nine elite Masters 1000 tournaments on the ATP Tour and its women's event is one of five Premier 5 events on the WTA Tour.
The tournament was started in 1899 as the Cincinnati Open and was renamed in 1901 to Tri-State Tennis Tournament, a name it would keep until 1969 , and would eventually grow into the tournament now held in Mason. The original tournament was held at the Avondale Athletic Club, which sat on property that is now Xavier University, and would later be moved to several various locations due to changes in tournament management and surfaces. The first tournament in 1899 was played on clay courts , and the event was mostly played on clay until 1978 when it switched permanently to hardcourts.

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