Pedzisa mutsara unotevera: Basa raDe Beck rakabatana nenguva yakasimba yekumhanya kwevarume kure kure muBelgium muma1970, naRoelants, Willy Polleunis, Emiel Puttemans, Karel Lismont naIvo Van Damme vari vamwe vatambi. 1973 IAAF World Cross Country Championships yakaratidza kuvhurwa kwemutambo wemazuva ano wepasi rose uye, yakaitirwa pamba turf muWaregem, vatatu veBelgian vePolleunis, Roelants naDe Beck vakahwina zita rekutanga rechikwata (De Beck akaiswa 18th mumwe nemumwe). De Beck akakunda zita rake rokutanga renyika munhangemutange yenyika gore rakatevera. Akagadzira nyonganyonga pa
1974 IAAF World Cross Country Championships nekukunda zita iri pamberi paMariano Haro (runner-up ya1973) uye kutungamira varume veBelgian kumenduru yegoridhe yechikwata.