Whakaotihia te rerenga e whai ake nei: I angitu a Rojas i tana whakataetae peke tuatahi i te 2011 South American Junior Championships, i wikitoria ai ia i te peke teitei. Na tenei wikitoria, i whakawhiwhia ki a ia tana hu tuatahi, na Marco Oviedo o te Venezuelan Athletics Federation (FVA) i muri i te wero a Velásquez ki te FVA ki te tautoko i a ia mena ka wikitoria ia. I hinga ia i te 2012 Championships, i whakahaere i te tuawha anake, engari i pai ake tana mahi i nga whakataetae taumata teitei i tera tau, ka peke ki te tuarima i te
Ibero-American Championships me te kii i te mētara parahi i te South American Under-23 Championships.