He initially played in Challenger tournaments and was able to reach the final of the Munich tournament that same year . In 1988 he reached a semi-final on the ATP World Tour for the first time , and he was also in the final of three tournaments in double competition . He won his first double title in 1990 alongside Omar Camporese in Milan , and the following year he won the Heilbronn Challenger Tournament against Markus Zoecke . In 1993 he was in a final of an ATP tournament for the only time in his career, but lost to Sergi Bruguera in Bordeaux . In total, he was able to win five double tournaments in the course of his career. He reached his highest score in the tennis world rankings in 1988 with position 67 in singles and in 1990 with position 25 in doubles. In Grand Slam tournaments, he never got past the third round in singles. In doubles he reached the quarter-finals at the US Open in 1993 .