Robinson suffered an ankle injury during the 1-0 reverse at Tottenham while Morrison is still struggling to overcome the heel problem which has troubled him in recent weeks.
Rookie midfielder Graham Dorrans, who is poised to sign a new contract, is back in training after sustaining a foot injury at White Hart Lane and Albion will make a late decision on the ex-Livingston player.
The Baggies could finally be relegated if they lose to the Latics and other results go against them.
Source: Eurosport
