Kammala jumla mai zuwa: Kulagin ya kasance memba na matasa 'yan wasa na Rasha. Tare da 'yan wasan matasa na Rasha, ya taka leda a 2010 FIBA Turai Under-16 Championship, da 2012 FIBA Turai Under-18 Championship, inda ya kasance memba na All-Tournament Team, da
2013 FIBA Under-19 Gasar Duniya, da kuma 2014 FIBA Turai Under-20 Championship.