| 1991 OTB International Open | |
|---|---|
| Date | August 19–26 |
| Edition | 5th |
| Category | ATP World Series WTA Tier V |
| Surface | Hard / outdoor |
| Location | Schenectady, New York, U.S. |
| Champions | |
| Men's singles | |
 Michael Stich[1] | |
| Women's singles | |
 Brenda Schultz | |
| Men's doubles | |
 Javier Sánchez /  Todd Woodbridge[2] | |
| Women's doubles | |
| Rachel McQuillan / Claudia Porwik | |
The 1991 OTB International Open was a combined men's and women's tennis tournament played on outdoor hard courts that was part of the World Series of the 1991 ATP Tour. It was the fifth edition of the tournament and was held in Schenectady, New York in the United States from August 19 through August 26, 1991. Michael Stich and Brenda Schultz won the singles titles.[3]
- ^ "1991 Schenectady – Men's singles draw". Association of Tennis Professionals (ATP).
- ^ "1991 Schenectady – Men's doubles draw". Association of Tennis Professionals (ATP).
- ^ John Barrett, ed. (1992). The International Tennis Federation World of Tennis 1992. London: CollinsWillow. pp. 139, 176. ISBN 9780002184304.