Michael Chang had a lot of firsts as a player and now he is using his experience to guide one of the young guns of world tennis, Kei Nishikori

In 1989 he made history at the French Open when he became the youngest man to win a Grand Slam title at 17 years three months. Michael Chang's career was defined on the red clay as he also became the first American man since 1955 to win at Roland Garros. His win over Ivan Lendl  in the16's with the infamous underarm serve in the eighth game of the final set is one of the  most talked about points ever played  at the French Open as he went on to defeat Stefan Edberg in the final. 25 years ago seems like a long time but as Michael says it also seems like just yesterday. We Are Tennis's Craig Gabriel sat down with the now husband to Amber and father of two daughters as well as coach to Kei Nishikori during the Malaysian Open, Kuala Lumpur.