Mezue ahịrịokwu na-esonụ: N'April 2005, ọ gara Madrid ịsọ mpi na
2005 World Taekwondo Championships, ebe nke itoolu. Afọ atọ ka e mesịrị, o meriri ebe nke abụọ na Dutch Open, nke nyere ya ohere isonye na Beijing 2007 World Taekwondo Championship na ụdị flyweight (-58 kg). N'ebe ahụ, Pérez meriri ọlaọcha ọlaọcha, na-atụfu Juan Antonio Ramos nke Spain na ngwụcha.