 Rambai muchinyora ndima iyi - Akakunda mikombe yenyika gumi nematanhatu kubva kuJr Olympic neYouth National inosangana uye akaita zvikwata zvepasi rose zveWorld Youth Championships muna 2015uye 2016 World U20 Championships. Achimiririra USA, Irby akawana sirivha mumamita mazana mana achimhanya 51.79 U18 - 2015 uye 51.39 U20 - 2016. Akamhanyawo pamakwikwi e4X400 relay makore ose ari maviri achikunda goridhe uye mu4X100 prelim U20 - 2016 zvakare achikunda goridhe. 