Cook will go for an MRI on his injured shoulder Monday, Adam Schefter of ESPN reports.
Cook was carted off due to the injury in the second half of Sunday's 34-26 loss to San Francisco. Vikings fans and Cook fantasy managers will wait with bated breath until the results of the MRI become available Monday. Should Cook need to miss extended time, Alexander Mattison would take over as the lead back, with rookie special-teams ace Kene Nwangwu in the mix for change-of-pace duties.