If there was a fourth phase to football, Kansas City probably would have dominated that, too.
Cairo Santos added a pair of field goals for Kansas City (4-3), including a career-best 53-yarder right before halftime. Smith was 24 of 28 for 226 yards, and Davis capped the string of 34 unanswered points with a short touchdown run in the fourth quarter.
"It's disappointing," said coach Jeff Fisher, whose team was coming off a victory over Seattle. "We had a great week, a short-lived bit of momentum, and we weren't able to put it all together."
"They took some things away and when that happens you've got to find a way to get some momentum offensively," Davis said, "and we weren't able to do that. But my hat really goes off to them. They did a really good job and made a lot of good plays."
Special teams had a lot to do with it.
Santos hit his 53-yarder for a 10-7 lead right before halftime.
Santos added his second field-goal and Charles punctuated a big day for the offense when he took a carry up the middle, left a defender grasping for air and outran the entire secondary for his second score of the game.
Davis added a 3-yard touchdown plunge in the final minutes as chants of "Let's Go Royals" filled Arrowhead Stadium.
"We clearly got outplayed in the second half of this game in all three phases," Fisher said. "It wasn't a good effort and we've got our work cut out for us."
NOTES: The Chiefs were awarded the Governor's Cup for the victory from Missouri Gov. Jay Nixon after the game. The Rams had owned it since a 2012 preseason victory. ... Chiefs CB Jamell Fleming and LB Josh Martin left with hamstring injuries. ... Saffold left with a shoulder injury, Long with a knee injury and Wells with an undisclosed injury. The Rams also lost WR Brian Quick (arm) early in the game and FS Rodney McLeod (knee). ... Rams DE Robert Quinn had two sacks.
Copyright 2014 by The Associated Press