The lone undefeated team in the NFC, the San Francisco 49ers (8-0) held off the Arizona Cardinals (3-5-1), 28-25, on Thursday night at State Farm Stadium in Glendale.

However, there was some bad news for San Francisco: Linebacker Kwon Alexander, a former LSU Tiger, suffered a torn pectoral muscle and will miss the remainder of the season.

Source: Former LSU LB Kwon Alexander to miss remainder of NFL season with injury