Washington Commanders rookie defensive tackle Phidarian Mathis left the field on a cart after a first-quarter injury to his left leg Sunday.
He was hurt on the first play of the Jacksonville Jaguars' second possession. Mathis grabbed his knee after going down awkwardly while defending a 1-yard run by James Robinson.
The Commanders said Mathis, a second-round draft pick out of Alabama, was questionable to return to the g