▁with ▁the ▁New ▁Jersey ▁Dev ils ▁and ▁St . ▁Louis ▁Blues . ▁He ▁was ▁selected ▁by ▁the ▁New ▁Jersey ▁Dev ils ▁ 1 1 7 th ▁overall ▁in ▁the ▁fourth ▁round ▁of ▁the ▁ 2 0 0 2 ▁N HL ▁Entry ▁D raft . ▁J ans sen ▁was ▁regarded ▁as ▁an ▁enfor cer . ▁ ▁Early ▁life ▁J ans sen ▁grew ▁up ▁in ▁the ▁St . ▁Louis ▁sub urb ▁of ▁E ure ka , ▁Missouri , ▁where ▁he ▁attended ▁E ure ka ▁High ▁School ▁for ▁three ▁years . ▁During ▁his ▁s oph om ore ▁and ▁junior ▁years ▁of ▁high ▁school , ▁J ans sen ▁played ▁for ▁the ▁St . ▁Louis ▁St ing ▁of ▁the ▁Junior ▁A ▁North ▁American ▁Hockey ▁League . ▁ ▁Play ing ▁career ▁In ▁ 2 0 0 1 , ▁J ans sen ▁was ▁selected ▁in ▁the ▁third ▁round ▁of ▁the ▁Ontario ▁Hockey ▁League ▁draft ▁by ▁the ▁W inds or ▁Sp it f ires . ▁Instead ▁of ▁comple ting ▁his ▁senior ▁year ▁at ▁E ure ka ▁High ▁School , ▁J ans sen ▁moved ▁to ▁W inds or , ▁Ontario ▁to ▁begin ▁his ▁first ▁season ▁with ▁the ▁Sp it f ires . ▁After ▁one ▁season ▁in ▁Ontario , ▁J ans sen ▁was ▁draft ed ▁by ▁the ▁New ▁Jersey ▁Dev ils ▁as ▁the ▁ 1 1 7 th ▁overall ▁pick ▁during ▁the ▁fourth ▁round ▁ 2 0 0 2 ▁N HL ▁Entry ▁D raft . ▁During ▁the ▁ 2 0 0 3 – 0 4 ▁O HL ▁season , ▁J ans sen ▁joined