Ollison was elevated from Atlanta's practice squad Saturday, Michael Rothstein of ESPN.com reports.
EDGE Analysis
Ollison led the team in carries in Week 11 against New England but was left on the practice squad for Week 12 after being sidelined with an illness. He won't maintain the primary role for Atlanta against the Buccaneers on Sunday due to the return of Cordarrelle Patterson, though Ollison could overtake both Wayne Gallman and Mike Davis for the primary backup duties.