Mingo said he injured the knee while catching a sideline pass in Saturday’s second preseason game, a loss to Baltimore.

The Dallas Cowboys reportedly fear that wideout Jonathan Mingo injured the posterior cruciate ligament in his right knee during Saturday's preseason matchup with the Baltimore Ravens, per ESPN's Todd Archer.

A RLINGTON, Texas -- Another week, another mostly rough start for the Dallas Cowboys offense led by backup quarterback Joe Milton in a 31-13 defeat against the Baltimore Ravens. He finished with 122 yards and an interception on 9 of 18 passing, and he was replaced by Will Grier with just over nine minutes left to play in the game.

Whether they want to admit it or not, the Dallas Cowboys have to have concerns about their backup quarterback position. Joe Milton, the favorite for the job entering training camp, struggled for the second consecutive preseason game.