Wallin attempts a response after losing the first two rounds by advancing forward behind his right-hand jab.
Joshua stays on the outside and looks for a counter right of his own through the guard.
A powerful one-two combination from the British-Nigerian has Wallin stumbling momentarily but the Swede quickly regains his balance.
Wallin is now cut by the right eye and Joshua continues his slow control punishing Wallin who still has a bloody nose.
