Bengals cornerback Dre Kirkpatrick sat out of Monday's practice with a sore left knee. Kirkpatrick was first cleared to practice last week after fracturing a bone in his left knee in July, days before the start of training camp. The 17th overall pick in the 2012 draft out of Alabama was pushing to see his first preseason action in Thursday's preseason finale at Indianapolis. Coach Marvin Lewis could call off those plans, but Kirkpatrick's injury isn't considered serious. Competition at cornerback is fierce, and the Bengals are anxious to see Kirkpatrick perform in a game situation. Top cornerback Leon Hall is coming back from an Achilles injury. The Bengals signed former Cowboys cornerback Terence Newman and former Texans cornerback Jason Allen along with holdovers Nate Clements, the likely starter at left cornerback, and Pacman Jones. The Bengals also drafted Shaun Prater in the fifth round of the 2012 draft.