Rubuta ci gaba don wannan sakin layi - Aikin De Beck ya zo daidai da lokacin da maza ke tsere na dogon lokaci a Belgium a cikin shekarun 1970, tare da Roelants, Willy Polleunis, Emiel Puttemans, Karel Lismont da Ivo Van Damme su ne sauran jarumai. Gasar tseren tsere ta duniya ta 1973
ya kasance bikin bude gasar zakarun duniya ta zamani kuma, wanda aka gudanar a gidansa a Waregem, 'yan wasan Belgian uku na Polleunis, Roelants da De Beck sun lashe taken farko na kungiyar (De Beck ya sanya na 18 a kowane mutum). De Beck ya lashe lambar farko ta kasa a tseren ƙasa shekara guda bayan haka. Ya haifar da tashin hankali a 1974 IAAF World Cross Country Championships ta hanyar lashe taken gaba da Mariano Haro (mai tsere na 1973) kuma ya jagoranci mazajen Beljium zuwa lambar zinare ta tawagar.