Rubuta ci gaba don wannan sakin layi - A watan Disamba na 2018, an kira Lafrenière zuwa Team Canada ta 2019 IIHF World Junior Championship
jerin sunayen. Shi ne mafi ƙanƙanta memba a kan roster da tara-youngest gaba har abada wakiltar Canada a cikin Duniya Juniors. Ya zira kwallaye na farko, kuma kawai, burin gasar a lokacin da Kanada ta lashe 5<unk>1 a kan Jamhuriyar Czech. Daga baya Team Finland ta fitar da Kanada a wasan kusa da na karshe.