Dee ihe na-aga n'ihu maka paragraf a - Dịka onye na-eto eto na-eto eto, Mosaner nọchitere anya Italy na World Junior Curling Championship anọ. Ọ gbara onye nke atọ maka Italy na 2012 World Junior Curling Championships
, n'otu ìgwè nke Andrea Pilzer na-agba. Ndị otu ahụ gbara nke itoolu. Mosaner mechara bụrụ onye isi ndị otu egwuregwu ndị nta nke Italy maka asọmpi World Juniors atọ sochirinụ. Na 2013 World Junior Curling Championship, Mosaner duru ndị otu ya nke Pilzer, Daniele Ferrazza na Roberto Arman ka ha nọrọ n'ọnọdụ nke isii (5-4 ndekọ). Na 2014 World Junior Curling Championships, o duru ndị otu ya nke Sebastiano Arman, Ferrazza na Roberto Arman ka ha nọrọ n'ọnọdụ nke ise, na-efunahụ Switzerland. N'ikpeazụ, na 2015 World Junior Curling Championship, ọ nweghị ihe ịga nke ọma, na-eduga ndị otu ya nke Sebastiano Arman, Carlo Gottardi na Fabio Ribotta na njedebe nke 8 (3-6).