Rubuta ci gaba don wannan sakin layi - Alƙalai na wasan karshe na Copa Libertadores na 2010 sune Héctor Baldassi na Argentina da Óscar Ruiz na Colombia. Baldassi ya fara aiki a cikin Primera División na Argentina a 1998 kuma shekaru biyu bayan haka ya fara zama na kasa da kasa. Ya yi wasan kwaikwayo da dama na CONMEBOL ciki har da wasan karshe na 2008 Copa Libertadores, kuma ya halarci wasanni da dama na kasa da kasa ciki har da 2004 Copa América
da kuma wasannin Olympics na 2008 a Beijing. An kira shi don gasar cin kofin duniya ta 2007 FIFA U-20, amma daga baya aka sallame shi saboda daya daga cikin mataimakansa bai wuce gwajin likita ba. Ya kuma yi hukunci a gasar cin kofin duniya ta FIFA ta 2010. Ruiz ya kasance alkalin wasa tun daga 1 ga Janairu 1995, kuma wasan farko na kasa da kasa ya kasance a ranar 12 ga Yuli 1995 (Paraguay da Venezuela). Ya yi aiki a gasar cin kofin duniya ta 2002 da 2006. An zaba shi a matsayin alkalin wasa na gasar cin kofin duniya ta FIFA ta 2010. Shi lauya ne ta hanyar sana'a.