Rubuta ci gaba don wannan sakin layi - De Beck ya juya zuwa waƙa a 1983 kuma ya lashe lambar yabo ta uku (kuma ta ƙarshe) ta Belgium a cikin aikinsa ta gudu 29:42.56 minti don mita 10,000. Shekararsa ta ƙarshe ta babban gasa ta zo a 1987: ya gama na 73 a 1987 IAAF World Cross Country Championships
kuma ya lashe Zwijndrecht Marathon a cikin lokaci na 2: 21: 50 hours.