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 akanga ari mutambi muduku pane vose pa
2017 FIBA Under-19 World Cup muEgypt, avhareji 10 mapoinzi uye 5.3 anobatsira pamutambo wechitanhatu-chinzvimbo timu. Pa2018 FIBA U18 European Championship muLatvia, akaenzana 12.9 mapoinzi uye 5.6 rebounds pamutambo sezvo timu yake yakapedza yechishanu. Jokubaitis akatungamira Lithuania kunzvimbo yechina pa2019 FIBA Under-19 World Cup kuGreece, kwaakawana avhareji ye11.3 mapoinzi uye 5.6 anobatsira pamutambo.