Coach Ron Rivera said Monday that Gibson (calf) underwent an MRI, Nicki Jhabvala of The Washington Post reports.
Gibson sustained a calf injury late in Sunday's Week 6 loss to Kansas City, and the results of his exam should help determine the extent of the issue. The 23-year-old rushed 10 times for 44 yards while hauling in two of three targets for no yards prior to his exit Sunday, and J.D. McKissic is in line for additional work if Gibson is forced to miss time.