Pedzisa mutsara unotevera: Gytis Masiulis akaita mudiki wake wekutanga weLithuania pa2014 FIBA Europe Under-16 Championship muLatvia. Akakunda menduru yebronze neLithuania mu2015 FIBA Europe Under-18 Championship. Gore rimwe gare gare, akahwina menduru yesirivheri pa2016 FIBA Europe Under-18 Championship muTurkey. Muna 2017, Masiulis akamiririra Lithuania ku
2017 FIBA Under-19 Basketball World Cup.