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?
Carl Chang (tennis) Carl Chang (born February 13, 1969) is the older brother and former coach of tennis star Michael Chang. He was born in Hoboken, New Jersey.
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.