September 10, 1988! Steffi Graf wins the US Open Tennis Championships to complete the Calendar Grand Slam--> http://wtatenn.is/TUQnaI : ESPN Tennis | By WTA | Facebook
![Mats Wilander during the 1988 U.S. Open Tennis Tournament in... Fotografía de noticias - Getty Images Mats Wilander during the 1988 U.S. Open Tennis Tournament in... Fotografía de noticias - Getty Images](https://media.gettyimages.com/id/541334809/es/foto/mats-wilander-during-the-1988-u-s-open-tennis-tournament-in-flushing-queens.jpg?s=612x612&w=gi&k=20&c=UN8o64pqm2w2X9xMlHYiUAcVwlGkPR1q-XeuhQqZrCQ=)
Mats Wilander during the 1988 U.S. Open Tennis Tournament in... Fotografía de noticias - Getty Images
![International Tennis Hall of Fame on Twitter: "1988 stands alone in tennis history. It's the year that the unprecedented happened: Steffi Graf's Golden Slam 🏆🥇🇩🇪 Graf became just the third woman to International Tennis Hall of Fame on Twitter: "1988 stands alone in tennis history. It's the year that the unprecedented happened: Steffi Graf's Golden Slam 🏆🥇🇩🇪 Graf became just the third woman to](https://pbs.twimg.com/media/EhA8sbLWsAYZK_m.jpg:large)
International Tennis Hall of Fame on Twitter: "1988 stands alone in tennis history. It's the year that the unprecedented happened: Steffi Graf's Golden Slam 🏆🥇🇩🇪 Graf became just the third woman to
![Serena Williams loses in US Open semis, ending bid for tennis' first Grand Slam since 1988 - ABC13 Houston Serena Williams loses in US Open semis, ending bid for tennis' first Grand Slam since 1988 - ABC13 Houston](https://cdn.abcotvs.com/dip/images/979601_091115-ap-serena-williams-img.jpg)
Serena Williams loses in US Open semis, ending bid for tennis' first Grand Slam since 1988 - ABC13 Houston
![50 for 50: Mats Wilander, 1988 men's singles champion - Official Site of the 2023 US Open Tennis Championships - A USTA Event 50 for 50: Mats Wilander, 1988 men's singles champion - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_WIlander_20180410.jpg)
50 for 50: Mats Wilander, 1988 men's singles champion - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![Steffi Graf wins the Grand Slam! - 1988 U.S. Open Tennis Champion - Sports Illustrated - September 19, 1988 - SI at Amazon's Sports Collectibles Store Steffi Graf wins the Grand Slam! - 1988 U.S. Open Tennis Champion - Sports Illustrated - September 19, 1988 - SI at Amazon's Sports Collectibles Store](https://m.media-amazon.com/images/I/71qfYQpNCQL._AC_UF1000,1000_QL80_.jpg)
Steffi Graf wins the Grand Slam! - 1988 U.S. Open Tennis Champion - Sports Illustrated - September 19, 1988 - SI at Amazon's Sports Collectibles Store
![Andre Agassi during the 1988 U.S. Open Tennis Tournament in Flushing,... Photo d'actualité - Getty Images Andre Agassi during the 1988 U.S. Open Tennis Tournament in Flushing,... Photo d'actualité - Getty Images](https://media.gettyimages.com/id/541334201/fr/photo/andre-agassi-during-the-1988-u-s-open-tennis-tournament-in-flushing-queens.jpg?s=612x612&w=gi&k=20&c=YgDVQ5hVsh25xGywyv8kQeE_BYSDC2o_W6By37vKvAw=)
Andre Agassi during the 1988 U.S. Open Tennis Tournament in Flushing,... Photo d'actualité - Getty Images
![This day in US Open history: Aug. 30, 1988 - Official Site of the 2023 US Open Tennis Championships - A USTA Event This day in US Open history: Aug. 30, 1988 - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_USTA711544_1456_01_01SSSampras1988.jpg)
This day in US Open history: Aug. 30, 1988 - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![Serena Williams loses in US Open semis, ending bid for tennis' first Grand Slam since 1988 | Sports | Jamaica Gleaner Serena Williams loses in US Open semis, ending bid for tennis' first Grand Slam since 1988 | Sports | Jamaica Gleaner](https://jamaica-gleaner.com/sites/default/files/styles/jg_article_image/public/media/article_images/2015/09/11/us_open_tennis_camp1.jpg?itok=sazenF0c)