Browns C Alex Mack will undergo an appendectomy on Monday, and is without a return date.
Unwelcome news for a sputtering Cleveland rushing attack averaging just 85.8 yards and 3.4 yards per carry through its first four games. The Browns are on bye this week, however, so it’s possible they’ll have their Pro Bowl center back in time for their Week 6 tilt with the Raiders. His status should be updated next week.