![Steffi Graf (GER) competing at the 1988 US Open in the year she won the Golden Slam Stock Photo - Alamy Steffi Graf (GER) competing at the 1988 US Open in the year she won the Golden Slam Stock Photo - Alamy](https://c8.alamy.com/comp/FD334A/steffi-graf-ger-competing-at-the-1988-us-open-in-the-year-she-won-FD334A.jpg)
Steffi Graf (GER) competing at the 1988 US Open in the year she won the Golden Slam Stock Photo - Alamy
![WTA on Instagram: “September 10, 1988! Steffi Graf wins the #USOpen to complete the Calendar Grand Slam!” | Steffi graf, Beautiful athletes, Softball training WTA on Instagram: “September 10, 1988! Steffi Graf wins the #USOpen to complete the Calendar Grand Slam!” | Steffi graf, Beautiful athletes, Softball training](https://i.pinimg.com/originals/3a/e6/bd/3ae6bda0190950a8ac8e3cd2da29de71.jpg)
WTA on Instagram: “September 10, 1988! Steffi Graf wins the #USOpen to complete the Calendar Grand Slam!” | Steffi graf, Beautiful athletes, Softball training
![Steffi Graf (GER) competing at the 1988 Olympic Summer Games in the year she won the Golden Slam Stock Photo - Alamy Steffi Graf (GER) competing at the 1988 Olympic Summer Games in the year she won the Golden Slam Stock Photo - Alamy](https://c8.alamy.com/comp/FD334G/steffi-graf-ger-competing-at-the-1988-olympic-summer-games-in-the-FD334G.jpg)
Steffi Graf (GER) competing at the 1988 Olympic Summer Games in the year she won the Golden Slam Stock Photo - Alamy
![US Open Tennis on Twitter: "Australian Open 🏆 Roland Garros 🏆 Wimbledon 🏆 US Open 🏆 Olympics 🥇 On this day in 1988, Steffi Graf completed the Golden Slam. 🤩 https://t.co/S1fgLWR43l" / Twitter US Open Tennis on Twitter: "Australian Open 🏆 Roland Garros 🏆 Wimbledon 🏆 US Open 🏆 Olympics 🥇 On this day in 1988, Steffi Graf completed the Golden Slam. 🤩 https://t.co/S1fgLWR43l" / Twitter](https://pbs.twimg.com/media/EjK93PoXsAQai3z.jpg)
US Open Tennis on Twitter: "Australian Open 🏆 Roland Garros 🏆 Wimbledon 🏆 US Open 🏆 Olympics 🥇 On this day in 1988, Steffi Graf completed the Golden Slam. 🤩 https://t.co/S1fgLWR43l" / Twitter
Steffi Graf Fan Page 🐐 on Instagram: “Steffi wrapped up 1988 with a win over Manuela Maleeva at Brighton (6-2 6-0) and a loss to Pam Shriver at the Championships in New York.…”
![CNN Sports provided by Bleacher Report - CNN.com | Steffi graf, Tennis players female, Tennis legends CNN Sports provided by Bleacher Report - CNN.com | Steffi graf, Tennis players female, Tennis legends](https://i.pinimg.com/originals/2b/d7/b8/2bd7b8ab7f899c58a0c6087a4664fa25.jpg)