Kansas City lost running back Jamaal Charles with a possible concussion on the opening possession of its wild-card game at Indianapolis.
Team officials said his return was questionable.
Charles was hurt on his third carry of the game and stayed down on the ground for several minutes before walking off the field under his own power. Team trainers tended to him on the sideline, doing what appeared to be concussion tests, before walking with Charles into the locker room.
The sixth-year running back led the AFC in rushing with 1,287 yards, led the Chiefs (11-5) with 70 receptions for 693 yards and seven TDs. His 19 total touchdowns led the NFL.
Despite Charles' injury, the Chiefs still scored a touchdown on the drive to take a 7-0 lead.
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