1989 US Open (tennis) and the final), three women's singles matches (two semifinals and the final), one men's doubles match (the final), two women's doubles matches (a semifinal and the final) and one mixed doubles match (the final). 1989 US Open (tennis) The 1989 US Open was a tennis tournament played on outdoor hard courts at the USTA National Tennis Center in New York City in the United States. It was the 109th edition of the US Open and was held from August 28 to September 10, 1989. Boris Becker defeated Ivan Lendl 7–6, 1–6, 6–3, 7–6 Steffi Graf defeated Martina Navratilova 3–6, 7–5,
US Open (tennis) in the United States. The US Open is the only Grand Slam tournament that employs tiebreakers in every set of a singles match. For the other three Grand Slam events, a match that reaches 6–6 in the last possible set (the third for women and the fifth for men) continues until a player takes a two-game lead. As with the US Open, those events use tiebreakers to decide the other sets. The US Open also is the only Grand Slam tournament with 16 qualifiers (instead of 12) in the women's singles draw. The tournament was first held in August 1881