Wentz was born in
Rothenbach. In the 1980s and until 1990 he represented
West Germany and belonged to the world elite in the
decathlon. His most notable result was winning the bronze medal at the
1984 Summer Olympics in
Los Angeles,
California. At that event he scored 8412 points, his results for each of the events were 10.99s - 7.11m - 15.87m - 2.09m - 47.78s - 14.35s - 46.60m - 4.50m - 67.68m - 4:33.96 min. His personal best result of 8762 points in
Filderstadt-Bernhausen on 5 June 1983, placed him third on the world all-time list at that time behind
Jürgen Hingsen and
Daley Thompson, and still ranks him
14th on the all-time list (as of 2018). It ranks him third among German decathletes, only behind Hingsen and
Uwe Freimuth. After his career in sports, Wentz became a doctor, eventually rising to chief doctor at the Schlüsselbad clinic in
Bad Peterstal (
Black Forest). ==International competitions==