sentences:  His personal best time in 400 m was 44.50 seconds, achieved in July 1983 in Munich.This ranks him second among German 400 m sprinters, only behind Thomas Schönlebe who ran 44.33 seconds.In 200 m, his best time was 20.44 seconds, only 0.01 second behind Norbert Dobeleit and Stefan Holz who occupy the top two places on the German all-time ranking.