The 1998 US Open was a tennis tournament played on outdoor hardcourts at the USTA National Tennis Center in New York City in New York in the United States. It was the 118th edition of the US Open and was held from August 31 through September 13, 1998.
Patrick Rafter defeated Mark Philippoussis, 6-3, 3-6, 6-2, 6-0
- o It was Rafter's 2nd and last career Grand Slam singles title and his 2nd at the US Open.
Lindsay Davenport defeated Martina Hingis, 6-3, 7-5
- o It was Davenport's 1st career Grand Slam singles title and her 1st and only at the US Open.
Sandon Stolle / Cyril Suk defeated Mark Knowles / Daniel Nestor, 4-6, 7-6, 6-2
- o It was Stolle's 1st and only career Grand Slam doubles title.
- o It was Suk's 1st and only career Grand Slam doubles title.
Martina Hingis / Jana Novotná defeated Lindsay Davenport / Natasha Zvereva 6-3, 6-3
- It was Hingis' 10th career Grand Slam title and her 2nd and last US Open title. It was Novotná's 17th and last career Grand Slam title and her 4th US Open title. With this victory Hingis completed the second doubles Grand Slam in a calendar year in the Open Era, with Martina Navratilova and Pam Shriver having completed the first in 1984.
Serena Williams / Max Mirnyi defeated Lisa Raymond / Patrick Galbraith 6-2, 6-2
- o It was Williams' 2nd career Grand Slam mixed doubles title and her 1st at the US Open.
- o It was Mirnyi's 2nd career Grand Slam mixed doubles title and his 1st at the US Open.
David Nalbandian defeated Roger Federer 6-3, 7-5
Jelena Doki? defeated Katarina Srebotnik 6-4, 6-2
K. J. Hippensteel / David Martin defeated Andy Ram / Lovro Zovko 6-7, 7-6, 6-2
Kim Clijsters / Eva Dyrberg defeated Jelena Doki? / Evie Dominikovic 7-6, 6-4
- ^ Kim Clijsters first reached into the final in 2005, in which she won.