The Facts: Ponder is out of Sunday’s game vs. Chicago with a concussion, the club said.

Diehards Line: Ponder, who was sacked three times in the first two quarters, appeared to be hurt when he was hit by Bears defensive end Shea McClellin on a third-down pass. Matt Cassel relieved Ponder to end the half. Ponder completed 3-of-8 passes for 40 yards for the Vikings, who have racked up 107 yards rushing and took a first-half lead on Cordarrelle Patterson 33-yard TD run. ... Add Ponder to the list of those we'll be monitoring as they work their way through the NFL concussion protocol in coming days.