Pedzisa mutsara unotevera: Somutambi muduku, Mosaner akamirira Italy muWorld Junior Curling Championships ina. Akatamba ari wechitatu kuItaly pa
2012 World Junior Curling Championships, pachikwata chaitungamirirwa naAndrea Pilzer. Chikwata chakapedza chiri chechipfumbamwe. Mosaner akabva ava kaputeni wechikwata chechidiki cheItaly pamakwikwi matatu anotevera eWorld Juniors. Pa2013 World Junior Curling Championships, Mosaner akatungamira timu yake yaPilzer, Daniele Ferrazza naRoberto Arman kunopedza 6th-nzvimbo (5-4 rekodhi). Pa2014 World Junior Curling Championships, akatungamira timu yake yaSebastiano Arman, Ferrazza naRoberto Arman kuenda kunzvimbo yechishanu, achirasikirwa mu tie-breaker kuSwitzerland. Pakupedzisira, pa2015 World Junior Curling Championships, haana kubudirira zvakanyanya, achitungamira timu yake yaSebastiano Arman, Carlo Gottardi naFabio Ribotta kunopedza 8th (3-6).