Tuhia he haere tonu mo tenei waahanga - Ko te mahi a De Beck i uru tahi ki te waa kaha o te oma tawhiti o nga taane i Belgium i nga tau 1970, me Roelants, Willy Polleunis, Emiel Puttemans, Karel Lismont me Ivo Van Damme nga kaiwhakaari. Ko te 1973 IAAF World Cross Country Championships i tohu i te whakatuwheratanga o te whakataetae toa o te ao hou, a, i tu ki te kainga i Waregem, ko te toru o Belgian o Polleunis, Roelants me De Beck i wikitoria i te taitara roopu tuatahi (ko De Beck te 18th takitahi). I wikitoria a De Beck i tana taitara motu tuatahi i te whenua whakawhiti i te tau i muri mai. I whakaputahia e ia he raruraru i te 1974 IAAF World Cross Country Championships
mā te wikitōria i te taitara i mua o Mariano Haro (te 1973 runner-up) me te arahi i nga tangata Belgian ki te mētara koura kapa.