Konplete fraz sa a: Johnson te jwe hockey sou glase nan kolèj pou Inivèsite Alaska Fairbanks (Nanooks). Li te chwazi pa Pittsburgh Penguins 125th an jeneral nan National Hockey League a (NHL)
2006 Entwodiksyon Draft. Pandan dènye ane li, li te Central Collegiate Hockey Association jwè nan ane a, osi byen ke yon finalist Hobey Baker Prim.