Cousins left Monday night's game with a foot injury. (USATSI)

Kirk Cousins got his second start of the preseason because Redskins franchise quarterback Robert Griffin III is still recovering from a knee injury he suffered in January.

With 11:50 left in the second quarter of the Monday Night game against the Steelers, and the Redskins offense facing a 2nd-and-3, Cousins dropped back to pass, didn't find any receivers open, and took off running towards the sidelines. Except Pittsburgh linebacker Lawrence Timmons beat him to it, tackling the second-year quarterback by the ankles.

Cousins limped back to the huddle before sitting down in the middle of the field and pointing to his right foot. He eventually hobbled to the bench where he was examined by the Redskins' medial staff.

Cousins didn't return to the game, but the team announced at halftime that RG3's backup suffered a sprained right foot. Good news: The X-rays were negative.

Veteran Rex Grossman replaced Cousins.

Drafted in the fourth round in 2012, Cousins played well in spot duty as a rookie, in RG3's absence. He was inconsistent in the Redskins' first preseason game, but that didn't keep ESPN analyst and former NFL coach Jon Gruden from announcing during Monday Night Football's pregame show that a team in need of a quarterback would be wise to give up a first-round pick for Cousins.