LINK "Injuries continue to mount for the Chicago Bears offensive line as yet another key member had to exit practice. According to Chris Emma, guard/center Ryan Bates walked off the practice field with trainer Andre Tucker during Thursday's practice. Bates was already filling in for an injured Nate Davis. Matt Pryor replaced Bates at right guard."
Follow up. It sounds like he was NOT injured but just got pulled due to the Bears trying to monitor his snap count. But it's all conjecture from various Bears' beat reporters comments. No official out on it.