Pedzisa mutsara unotevera: Musi waMarch 5, 2014, Mitchell akatengeswa kuBuffalo Sabres, pamwe chete nechisarudzo chechipiri chedrafiti mu
2014 uye wechipiri-kutenderera sarudza muna 2016 (kutengeswa kuMontreal kwaJosh Gorges), mukutsinhana naMat Moulson naCody McCormick. Mitchell akapedza mwaka aine zvibodzwa zviviri uye mapoinzi gumi mumitambo makumi matanhatu nenomwe.