1999 Cincinnati Masters
| 1999 Great American Insurance ATP Championships | |
|---|---|
| Date | August 9 – August 16 |
| Edition | 98th |
| Category | ATP Super 9 |
| Draw | 642/32D |
| Prize money | $2,200,000 |
| Surface | Clay |
| Location | Cincinnati, USA |
| Champions | |
| Singles | |
 Pete Sampras
|
|
| Doubles | |
 Jonas Björkman /  Byron Black
|
|
The 1999 Cincinnati Open, known by the corporate title of the Great American Insurance ATP Championship was a men's tennis tournament played on outdoor Clay courts. It was the 98th edition of the tournament previously known as the Thriftway ATP Championships, and was part of the ATP Super 9 of the 1999 ATP Tour. It took place in Cincinnati, Ohio, USA, from August 9 through August 16, 1999. The singles title was won by first-seeded Pete Sampras.
The tournament had previously appeared on the Tier III of the WTA Tour but no event was held from 1989 to 2003.
Pete Sampras defeated 
Patrick Rafter, 7–6(9–7), 6–3
Jonas Björkman / Byron Black defeated Todd Woodbridge / Mark Woodforde 6–3, 7–6(8–6)
...
Wikipedia