Third defensive tackle Alfonso Boone sat out with a sprained right ankle.
A handful of Bears who are hoping for roster spots missed out on their last chances to make an impression, as a line began forming at the pay window for injury settlements.
Wide receiver Ramondo North (right hand), defensive back Eric Johnson (left hamstring), defensive tackle Reggie Grimes (right hamstring) and defensive lineman Jason Wiltz (groin) all sat out.
Defensive tackle Christian Peter suffered a fractured thumb in the game.
"He's done such a good job for us so it's a big disappointment," Jauron said. "Hopefully he'll be able to play. I don't know."
PERFECT RECORD The Bears' first string defense went to the bench with the team owning a 7-3 lead in the middle of the first quarter.
The Bears led in all four preseason games when their first string defense came off the field.
LEAVE IT TO WANNY Did the game mean nothing to Dolphins coach Dave Wannstedt and his staff, many of whom served under him in Chicago? Wannstedt said it didn't during a pregame teleconference.
Then the Dolphins opened a final meaningless preseason game with an onside kick. Olindo Mare's kick was recovered by teammate Patrick Surtain.
The rather unusual way to open a preseason game ended with Dolphins second-string middle linebacker Twan Russell suffering a concussion.
Coach Dick Jauron wasn't surprised by the move because the Dolphins do it occasionally.
"We had talked about it through the course of the week," he said. "They hadn't done it yet (in preseason). We didn't have our onside kick team on the field."