Earlier today after practice, Doc Rivers said that backup guard Keyon Dooling was "questionable" for tomorrow's game against the Chicago Bulls at the TD Garden. While there weren't too many details revealed other than 'knee ailments,' he may have banged knees pretty good getting screened by Dirk Nowitzki. Check out the video below and judge for yourself. He did play a few more minutes after this however, so it's very possible this is just a random play.
Note: Report link credited to Chris Forsberg from ESPNBoston.com