Dennis (ankle) underwent an MRI after the Buccaneers' Week 4 loss to the Packers, Jenna Laine of ESPN.com reported Monday.
Dennis exited the loss to the Packers early with an ankle injury. The linebacker entered the Week 4 matchup dealing with a lingering calf injury, and the need for an MRI after the contest does not bode well for the 26-year-old's leg. It remains unclear how significant Dennis' injury is and how much time he may be required to miss.