Pedzisa mutsara unotevera: Musi waMay 21, 2013, USA Basketball yakazivisa mutsara wevatambi ve24, kusanganisira Okafor, avo vakanga vabvuma kukokwa kuJune 14<unk>19, 2013, USA Basketball Men's U19 World Cup team training camp. Musasa wacho wakashandiswa kusarudza boka revarume 12 nokuda kweJune 27 <unk> July 7,
2013 FIBA Under-19 World Championship muCzech Republic. Okafor akaita rondedzero yekupedzisira yakaziviswa musi wa 18 Chikumi. Chikwata chakahwina menduru yegoridhe, uye Okafor akaita All-Tournament chikwata, pamwe naye uye mutambo MVP Gordon. Akatungamirira mutambo wacho ne77% field goal percentage, uye ndiye chete mutambi weAll-Tournament Team aizodzokera kuchikoro chesekondari. Zvisinei, varairidzi Billy Donovan naShaka Smart vakamuudza kuti chinetso chake chakanga chiri mamiriro ake ezvinhu.