 Nyorai kuenderera mberi kweiyi ndima - Musi wa1 kusvika 3 Chivabvu, Mamun akakwikwidza pa2015 European Championshipsuko iye pamwe chete naYana Kudryavtseva naAlexandra Soldatova vakahwina goridhe rechikwata cheRussia. Akakwikwidza kumakwikwi matatu ekupedzisira, kuhwina goridhe mu hoop, sirivheri mubhora uye wechishanu muribhoni. Musi wa15-16 Chivabvu, Mamun akahwina sirivheri yakatenderedza pa2015 Holon Grand Prix, akafanirwa nemitambo mitatu yekupedzisira, akahwina sirivheri mu hoop uye bronze makirabhu, ribhoni. Mamun akahwina goridhe rake rekutanga mumwaka uyu muTashkent World Cup ya2015, kwaakakunda mukombe wepasi rose aine huwandu hwe75.500 mapoinzi uye ese mana magumo emutambo. 