Whakakihia te rerenga e whai ake nei: I takaro a Jokubaitis mo Lithuania i te 2016 FIBA U16 European Championship i Poland. I whiwhi ia i te toharite 10 ngā tohu, ā, i āwhina i tana kapa ki te wikitōria i tētahi mētara hiriwa. Ko Jokubaitis te kaitakaro taiohi i te 2017 FIBA Under-19 World Cup i Ihipa, e 10 nga tohu me te 5.3 awhina mo ia keemu mo te roopu tuaono. I te 2018 FIBA U18 European Championship i Latvia, i toharite ia 12.9 tohu me te 5.6 rebounds ia keemu i te wa i mutu ai tana kapa i te tuarima. Ko Jokubaitis i ārahi i a Rītū ki te tūranga tuawha i te
2019 FIBA Under-19 World Cup i Kariki, i reira ia i toharite 11.3 nga tohu me te 5.6 awhina mo ia keemu.