Men's singles

Mats Wilander defeated Ivan Lendl 6–4, 4–6, 6–3, 5–7, 6–4

• It was Wilander's 7th and last career Grand Slam title and his only US Open title. He became the first male player since Jimmy Connors in 1974 to win three Grand Slam titles in a season. The final was the longest in the Open's history, lasting 4 hours and 55 minutes

Women's singles

Steffi Graf defeated Gabriela Sabatini 6–3, 3–6, 6–1

• It was Graf's 5th career Grand Slam title and her 1st US Open title. She became the second woman in the Open Era to complete a singles Grand Slam in a calendar year after Margaret Court did so in 1970. After winning the Olympic title in Seoul weeks later, she became the first (and so far only) man or woman to win a calendar year Golden Slam.

Men's doubles

Sergio Casal / Emilio Sánchez defeated Rick Leach / Jim Pugh by walkover

• It was Casal's 2nd career Grand Slam title and his 2nd and last US Open title. It was Sánchez's 4th career Grand Slam title and his 2nd and last US Open title.

Women's doubles

Gigi Fernández / Robin White defeated Patty Fendick / Jill Hetherington 6–4, 6–1

• It was the 1st career Grand Slam title and 1st US Open title for both Fernández and White.

Mixed doubles

Jana Novotná / Jim Pugh defeated Elizabeth Smylie / Patrick McEnroe 7–5, 6–3

• It was Novotná's 2nd career Grand Slam title and her 1st US Open title. It was Pugh's 3rd career Grand Slam title and his only US Open title.

Boys' singles

Nicolás Pereira defeated Nicklas Kulti 6–1, 6–2

Girls' singles

Carrie Cunningham defeated Rachel McQuillan 7–5, 6–3

Boys' doubles

Jonathan Stark / John Yancey defeated Massimo Boscatto / Stefano Pescosolido 7–6, 7–5

Girls' doubles

Meredith McGrath / Kimberly Po defeated Cathy Caverzasio / Laura Lapi 6–3, 6–1