Brandon Knight

The Cowboys obviously lost two key players in tackles La'el Collins and Tyron Smith last year. But in the process, did the team actually add some needed depth?

In the nine starts for Brandon Knight at left tackle last year, the Cowboys were 5-4. But it's what he didn't do that is even more impressive.

In yet another blow to the Cowboys' offensive line depth, left tackle Brandon Knight had knee surgery Tuesday and is expected to miss at least a couple of weeks, head coach Mike McCarthy said.

All week we're breaking down the Cowboys' offensive line, including a change at position coach and a major lineup change coming in 2020.

The Cowboys' offensive line room is stacked, but Brandon Knight's positional flexibility could give him a leg up as he bids to earn a roster spot.