Buuxi weedha soo socota: Waxaa laga soo qaatay Quebec Major Junior Hockey League (QMJHL) 22aad ee guud ahaan
1998, Gagné wuxuu u ciyaaray kooxda Beauport Harfangs iyo Quebec Remparts muddo saddex xilli ciyaareed ah. Wuxuu xirfaddiisa NHL ka bilaabay Flyers sanadkii 1999 waxaana loogu magac daray NHL All-Rookie Team. Wuxuu ka soo muuqday laba NHL All-Star Games wuxuuna ku guuleystay laba Bobby Clarke Trophies Flyers sida kooxda MVP.