1989 US Open (tennis) 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, 6–1 John McEnroe / Mark Woodforde defeated Ken Flach / Robert Seguso 6–4, 4–6, 6–3, 6–3 Hana Mandlíková / Martina Navratilova defeated Mary Joe Fernández / Pam Shriver 5–7, 6–4, 6–4 Robin White /
2015 US Open (tennis) 2015 US Open (tennis) The 2015 US Open was a tennis tournament played on outdoor hard courts. It was the 135th edition of the US Open, the fourth and final Grand Slam event of the year. It took place at the USTA Billie Jean King National Tennis Center. Marin Čilić was the defending champion in the men's singles event, but lost to eventual champion Novak Djokovic in the semifinals. Serena Williams was the three-time defending champion in the women's singles event and was also trying to complete the calendar Grand Slam, but she lost to Roberta Vinci in the semifinals.