Bobocel jadi kasohor salaku atlit junior anu bersaing dina steeplechase sareng di jalan lintas nagara. Manéhna meunang medali pérak dina steeplechase di 2003 Éropa Athletics Junior Championships, lajeng diulang yén finish di 2004 Dunya Junior Championships di Athletics. Manéhna ogé runner-up junior di 2004 European Cross Country Championships taun éta. Dina taun 2005, manéhna jadi ka-20 dina lomba junior di World Cross Country Championships
sarta meunangkeun gelar junior di 2005 Éropa Cross Nagara Championships. Manéhna ogé nahan medali pérak di steeplechase di 2005 Éropa Athletics Junior Championships. Manéhna netepkeun rékor junior Éropa 9:37.45 pikeun meunangkeun pérak steeplechase séjénna di 2006 World Junior Championships in Athletics, tapi ngan ukur katilu dina balapan junior di 2006 European Cross Country Championships.