He was East German 100 metres champion in 1977 , 1978 , and 1980 .
Ray established himself in the elite of world sprinting by setting a world junior 100m record of 10.16 seconds .
Ray was East German 100 metres Ray in 1977 , 1978 , and 1980 .
Ray established himself in the elite of world sprinting by setting a world junior 100m record of 10.16 seconds .