Pedzisa mutsara unotevera: Arango Buitrago akatanga kubatanidzwa rinenge gore rimwe pashure pokunge asvikwa naChope. Akatanga kuedza kumhanya ari bofu paEstadio Alfonso Galvis Duque uye kubva ipapo akatanga kuda mutambo uyu. Muna 2011, akasarudzwa kuchikwata chenyika cheColombia ku
IPC Athletics World Championships. Akakwikwidza mumitambo miviri, makwikwi emamita mazana mana nemakumi masere. Mumakwikwi e400m okutanga akaiswa mumakwikwi matatu okupedzisira. Kunyange zvazvo akapedza ari wechipiri shure kweBritain Tracey Hinton, nguva yake ye 1:07.94 ndiyo yakakurumidza kurasikirwa nenguva yekupisa uye akatora nzvimbo yechina mumagumo. Mumutambo wokupedzisira, pasinei nokuita nguva yakanakisisa yemwaka we 1:05.88, Arango Buitrago akapedza kunze kwemenduru panzvimbo yechina. Mumakwikwi e800 metres akaisa nguva ye2:31.31 muchipiri chechipiri kuti apfuure munzvimbo yekutanga achiisa rekodhi yenzvimbo. Akamhanya zvishoma mufainari, asi zvakanga zvichiri zvakakwana kuti apedze wechipiri shure kweCzech Republic Miroslava Sedlackova kuti atore menduru yesirivha.