Carl Chang, is the older brother and former coach of which tennis star, a now retired, American professional tennis player, that won 34 top-level professional singles titles?
Michael Chang Michael Te-Pei Chang (born February 22, 1972) is a retired American professional tennis player. He won 34 top-level professional singles titles, including the 1989 French Open when he was 17. He also was a three-time runner-up at the majors and reached a career best ranking of world No. 2 in 1996. Since he was shorter than virtually all of his opponents, he played a dogged defensive style utilizing his quickness and speed. In 2008, he was inducted into the International Tennis Hall of Fame, and he has coached Kei Nishikori since 2014.
Jim Thomas (tennis) Jim Thomas (born September 24, 1974) is an American former professional tennis player. His highest ATP world singles ranking was number 288, which he reached on November 2, 1998. His career high in doubles was at 29, set on August 21, 2006. He retired following the 2008 season.