Pedzisa mutsara unotevera: Jokubaitis akatambira Lithuania pa2016 FIBA U16 European Championship muPoland. Akawana avhareji yemapoinzi gumi uye akabatsira chikwata chake kuhwina menduru yesirivha. Jokubaitis ndiye mutambi wechidiki pa2017 FIBA Under-19 World Cup muEgypt, aine avhareji yemapoinzi gumi uye 5.3 anobatsira pamutambo wechikwata chechitanhatu. Pa2018 FIBA U18 European Championship muLatvia, akaenzana 12.9 mapoinzi uye 5.6 rebounds pamutambo sezvo timu yake yakapedza yechishanu. Jokubaitis akatungamirira Lithuania kunzvimbo yechina pa
2019 FIBA Under-19 World Cup muGreece, uko akaenzana 11.3 mapoinzi uye 5.6 anobatsira pamutambo.