There is a tie atop the NFL's AFC West after the Chargers stunned the Chiefs with a 29-28 comeback win in the final seconds in Kansas City.
Philip Rivers hit Mike Williams with a one-yard TD pass with four seconds left and then found Williams again for the two-point conversion to win it.
Williams finished with two TD catches and also ran for a score as LA overcame an ealry 14-0 deficit.
Patrick Mahomes threw two TD's and Damien Williams ran for two scores for KC.
The Chargers and Chiefs have both clinched playoff berths at 11-and-3.
Patrick Mahomes threw for a pair of first-quarter touchdowns and was 24 of 34 for 243 yards and no picks.