Ravens' Alejandro Villanueva: Leaves with knee issue

Villanueva is questionable to return to Sunday's game against the Broncos with a knee injury, Jonas Shaffer of The Baltimore Sun reports.

Villanueva's absence leaves the Ravens without their top two options at left tackle, as Ronnie Stanley is sitting out with an ankle injury. Patrick Mekari most likely will pick up the slack while the two are out.