Mack (foot) has been ruled out for Monday's game at Pittsburgh.
Mack suffered a foot injury Week 3 but was able to power through it four four consecutive contests. Notably, he also put together a five-game stretch in which he recorded at least one sack per game Weeks 2 through 6. But he'll now take a seat for a second straight outing, which may be an intentional decision by the Bears with a Week 10 bye on tap. Mack's next chance to play will arrive Sunday, Nov. 21 against the Ravens.