 El-Idrissi akapedza ari wechina mu 4 × 400 m relay pa 2004 World Indoor Championships, pamwe chete nevatambi vechikwata Alain Rohr, Martin Leiser naAndreas Oggenfuss. Pakutanga, panguva yechirongwa ichi, chikwata chimwe chetecho cheSwitzerland chakanga chawana 3.04,09, rekodhi itsva yenyika. Akatorawo chikamu muMitambo yeOlympic ya2004, uye akapedza wechisere mu2005 Summer Universiade. 