Record-breaking tennis champion Steffi Graf added extra sporting stardust to the Longines Global Champions Tour of Hamburg today. Steffi joined German show jumping legend Ludger Beerbaum on a course walk in the big Derby arena at the 5th leg of the world's premier show jumping circuit. She said: "It could not be a more perfect day here, such a big crowd and it was great to have someone like Ludger explain and give so much background of the intricacy of the course and for me to learn about this." Steffi, who smashed records in tennis and is one of the legends of the sport, was a star attraction and revealed she rode horses as a child and that her own daughter also loves riding. In an interview with LGCT, the mother-of-two, said: "My daughter rode a little bit for a few years, she loves horses! I used to ride a little bit when I was younger. It's great to be here and experience this." Steffi lives in the US with her husband Andre Agassi and her two children and was impressed to learn about the Tour's opening event on the sands of Miami Beach. She said: "That is amazing." Steffi is an Ambassador of Elegance for Longines, the Tour's Title Partner and Official Timekeeper, and said: "I have been an Ambassador with Longines for eight years all over the world going to Ascot, the Kentucky Derby and now the Longines Global Champions Tour and it is great to experience these events and to promote our (with husband Andre Agassi) Children For Tomorrow charity."