Kelly suffered a hip flexor injury in Sunday's 26-0 loss to Seattle, Ben Goessling of The Minnesota Star Tribune reports.
Kelly exited the game in the second half with a hip issue, which is now understood to be a flexor problem. The 32-year-old will be reevaluated in the coming days, but if he is forced to miss any action moving forward, Michael Jurgens could stand to operate as the team's starting center.