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.
2003 US Open – Men's Singles Pete Sampras was the reigning champion, but he retired from professional tennis in August of that year.