1991 US Open – Mixed Doubles

Elizabeth Smylie and Todd Woodbridge were the defending champions but they competed with different partners that year, Smylie with John Fitzgerald and Woodbridge with Nicole Provis. Smylie and Fitzgerald lost in the second round to Elna Reinach and Christo van Rensburg. Provis and Woodbridge lost in the quarterfinals to Manon Bollegraf and Tom Nijssen. Bollegraf and Nijssen won in the final 6–2, 7–6 (7–2) against Arantxa Sánchez Vicario and Emilio Sánchez.

1991 US Open – Mixed Doubles

Elizabeth Smylie and Todd Woodbridge were the defending champions but they competed with different partners that year, Smylie with John Fitzgerald and Woodbridge with Nicole Provis. Smylie and Fitzgerald lost in the second round to Elna Reinach and Christo van Rensburg. Provis and Woodbridge lost in the quarterfinals to Manon Bollegraf and Tom Nijssen. Bollegraf and Nijssen won in the final 6–2, 7–6 (7–2) against Arantxa Sánchez Vicario and Emilio Sánchez.