This news was expected: Troy Polamalu was ruled out for Thursday's game against the Titans. But the Steelers' usual fill-in at safety, Ryan Mundy, isn't guaranteed to take over that spot for the entire game.
Mundy is the most talented safety on the team behind Polamalu and Ryan Clark, but he's become a liability because of his illegal hits. His 15-yard penalty for a helmet-to-helmet hit Sunday came two plays before the Eagles' first touchdown of the game. Then, in the fourth quarter, he got beat by Eagles tight end Brent Celek for the go-ahead touchdown.
Tomlin said Mundy will get the first shot at stepping in for Polamalu, but he indicated veteran Will Allen could receive increased reps.
Mundy was fined $21,000 for knocking out Raiders wide receiver Darrius Heyward-Bey with a helmet-to-helmet hit two weeks ago. In 2009, he was fined $10,000 for a late hit on Oakland wide receiver Johnnie Lee Higgins that led to the Raiders' winning touchdown.