 Nyorai kuenderera mberi kweiyi ndima - Muna Zvita 2010, Jensen akaita kuoneka kwake kwechipiri padanho reU-20 mu2011 IIHF World Junior Championships Division I mutambo, wakaitirwa muSlovenia. Achinyora zvibodzwa zviviri uye mapoinzi mashanu pamitambo mishanu, pamwe nekutungamira timu makumi maviri neshanu pachinangwa, akabatsira Denmark kunzvimbo yepamusoro mudziva ravo uye kukwidziridzwa kuchikamu chepamusoro chemakwikwi e2012. Denmark yakanga yakaenzana neSlovenia panzvimbo yokutanga muGroup B nekukunda mana uye kurasikirwa kumwe chete, asi vakakunda nemhaka yekukunda mutambo wavo kuzorwa navo 21. 