WTA on Instagram: “September 10, 1988! Steffi Graf wins the #USOpen to complete the Calendar Grand Slam!” | Steffi graf, Beautiful athletes, Softball training
Billie Jean King on Twitter: "On this day in 1988, Steffi Graf became the only tennis player in history to achieve the Golden Slam by winning all 4 Grand Slam singles titles
Page 3 - 5 Steffi Graf records that will likely never be broken
Steffi Graf: There's no comparison in tennis for the feeling of standing on the Olympic podium : Tennis Buzz
Steffi Graf | The Quizzy Witter
Steffi Graf, the legend who achieved 'golden Grand Slam' in 1988
Greatest Seasons: Steffi Graf 1988 - VAVEL USA
Steffi Graf - The Only Tennis Player to Win a Golden Slam in 1988 | STEVE G TENNIS
West Germany Steffi Graf, 1988 Us Open Sports Illustrated Cover by Sports Illustrated
The three greatest seasons by a player in tennis history - Page 4
October 1, 1988: Steffi Graf wins Olympic gold for an amazing achievement
Steffi Graf (GER) competing at the 1988 US Open in the year she won the Golden Slam Stock Photo - Alamy
Steffi Graf, the first and only Golden Slam
Greatest Seasons: Steffi Graf 1988 - VAVEL USA
Steffi Graf - 1988. The Grand Slam year - West Germany
This day in US Open history: Aug. 28, 1984 - Official Site of the 2021 US Open Tennis Championships - A USTA Event
The Calendar Golden Slam: How Steffi Graf dominated 1988
For Steffi Graf in '88, First Round Was a Breeze - The New York Times
Watch: On the anniversary of Steffi Graf's Grand Slam, a look back at her golden 1988
Steffi Graf (GER) competing at the 1988 Lipton International Players Championship Stock Photo - Alamy
1988: Steffi Graf wins 6-0, 6-0 to win French Open title | Archives | napavalleyregister.com
1988: Steffi Graf ends Wimbledon reign of Martina Navratilova | | timegoggles.com
Steffi's Golden Slam at 25: Part One (Introduction) | A man and his racquet
Remembering Edberg, Graf and British disappointment at Wimbledon 1988 | Wimbledon 2014 | The Guardian
How Steffi Graf collected the Golden Slam in 1988 - Tennis Time
The three greatest seasons by a player in tennis history - Page 4