On June 18, 2015 Brunson akazivisa sezvo nhengo 12-murume 2015 USA Basketball Men kuti U19 World Cup Team nokuda 2015 FIBA Under-19 World Cup
. Brunson akawana MVP yemutambo, mushure mekutungamira timu ne5.6 inobatsira uye 2.1 inobira mutambo. Akanyora mutambo-wepamusoro 30 mapoinzi mumasemifainari achipesana neGirisi, uye akaverengera timu-yepamusoro 14 mapoinzi kusanganisira matanhatu mukuwedzera nguva pamwe ne7 inobatsira, 5 rebounds uye kuba mumutambo wemenduru yegoridhe uchipesana neCroatia. Brunson akaenzana newaanotamba naye Harry Giles, aine avhareji ye14.0 pamutambo. Akatonga mumitambo miviri yokupedzisira. Zvichienderana nebasa iri, akazivikanwa seUSA Basketball Male Athlete yeGore, musi waZvita 21, 2015.