On February 26, 2018, McDonagh akanga kuchinjaniswa (pamwe J. T. Miller) kuna Tampa Bay Mheni mukutsinhana Libor Hájek, Brett Howden, Vladislav Namestnikov, wokutanga-kumativi sarudza muna 2018 NHL Entry Draft, uye mamiriro wechipiri-kumativi sarudza muna 2019 NHL Entry Draft
. Kutengeserana kwakatevera mavhiki ekutengesa makuhwa akawedzerwa netsamba yechikwata kune vateveri veRangers musi waFebruary 8, 2018, vachizivisa kuvakazve. Musi waApril 18, 2018, McDonagh akatamba mumutambo wake we100th NHL playoff.