However, Mike Pettine left the door open for Mack's return in 2014 during his Monday news conference. The coach said if the damage is limited to a break, Mack's timetable could be 8-10 weeks. He is expected to make a full recovery.
Mack was hurt during a second-quarter rushing attempt by the Browns, crumbling to the ground as trainers descended. Fitted with an air cast over his left leg, Mack was carted off to the locker room and quickly ruled out by the team.
Cleveland still boasts one of the NFL's top cast of blockers, but Mack will be missed by this run-heavy attack.