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,
Ivan Lendl from 1985 through 1987, Lendl's match-winning percentage was over 90%. This record was equalled by Roger Federer in 2004–2006, but Lendl remains the only male tennis player with over 90% match wins in five different years (1982 was the first, 1989 the last). From the 1985 US Open to the 1988 Australian Open, Lendl reached ten consecutive Grand Slam singles semifinals — a record that was broken by Federer at the 2007 Australian Open. Lendl began 1989 by winning his first Australian Open title with a straight sets final victory over Miloslav Mečíř, and went on to win 10 titles