Defensive tackle Dontari Poe scored a 1-yard offensive touchdown for Kansas City as the Chiefs lead the San Diego Chargers, 12-3, from Qualcomm Stadium in San Diego, Calif.

The Chiefs started the game with the ball and exchanged empty possessions with the Chargers before putting together the lone touchdown drive of the game thus far.

On second-and-6 from the Kansas City 33-yard line, quarterback Alex Smith hit running back Charcandrick West for a 47-yard gain into Chargers territory. Smith and the offense would work the ball to the Chargers 1-yard line, but a West run was stuffed on third down. Head coach Andy Reid opted to go for it on fourth down and brought in Poe for the attempt.

Poe scored a touchdown to give the Chiefs the 6-0 lead. After an illegal use of hands penalty, the extra point was backed up to a 43-yard try, which was missed by kicker Cairo Santos.

The Chargers responded with a 52-yard field goal from K Josh Lambo to make it 6-3, but Santos hit a 28-yarder and a 24-yarder in the second quarter to make it 12-3 Chiefs lead headed into the half.

Smith set the franchise record for most pass attempts without throwing an interception in the first half. He finished 14 of 18 for 202 yards passing headed into the locker room.

West leads the Chiefs in total yards with 65. Linebacker Josh Mauga leads the team in total tackles with 5 and also recorded a sack in the first half.

Wide receiver De'Anthony Thomas was evaluated for a concussion in the first quarter and has not returned.

San Diego will receive the ball to start the second half.