Tulis terus kanggo paragraf iki - Yepez minangka bagean saka delegasi Ekuador ing sawetara Kejuaraan lan Turnamen internasional: Olimpiade Catur kaping 16 ing Tel Aviv 1964, Olimpiade Catur kaping 17 ing Havana 1966, Olimpiade Catur kaping 18
Lugano 1968, Open Tournament of Nice - 1974 (Capitan), Panamerican Tournament of Havana, 1968, II Tournament "Apertura" - Bogotá, 1970, Tournament "Ecopetrol - El Tiempo" - Bogotá, 1970, VIII Karibia lan Amerika Tengah Zone Tournament FIDE, Bogotá <unk> 1972.