Career
His highest Association of Tennis Professionals singles ranking is World Number. 22, which he reached on 17 April 1995. His career-high doubles ranking was World Number.
He twice reached the quarterfinals of a Grand Slam tournament.
He also reached the semifinals of the 1993 Hamburg Masters and reached the finals of Indianapolis in 1995 after defeating Pete Sampras. At the 1998 United States Open, Karbacher, then ranked World Number.
He retired from professional tennis in 2000. Since 2007 he is the president of the German players organization "Tennis Germany".
Singles (3).