KANSAS CITY, Mo. (AP) — Chiefs kicker Harrison Butker drilled a 43-yard field goal with 8 seconds left in his first career game, atoning for an earlier miss and helping Kansas City to a 29-20 victory over the Washington Redskins on Monday night.

Signed off the Carolina practice squad earlier in the week, Butker missed a 46-yarder in the first half before hitting three attempts in the second. The first tied the score 17-all, the next gave the Chiefs the lead and the last made Kansas City (4-0) the league’s only undefeated team.

The Chiefs put an exclamation point on the win when linebacker Justin Houston picked up a fumble as the Redskins (3-2) were trying to keep the game alive and returned it for a game-ending touchdown.

The last time there was only one unbeaten team through the first four weeks of the season was 2010, when the Chiefs were the final team standing. They went on to win the AFC West.

Flags flew at half-staff and there was a moment of silence before the game for victims of the Las Vegas shooting. The Redskins then locked arms for the national anthem, while everyone on the Chiefs side stood with the exception of cornerback Peters and linebacker Ukeme Eligwe.

Redskins cornerback Josh Norman departed in the second quarter with a rib injury , and his backup Quinton Dunbar left early in the fourth. Running back Rob Kelley and safety Deshazor Everett also left with injuries for Washington, while Chiefs right guard Laurent Duvernay-Tardif was sidelined by a left knee injury on their second offensive play.

UP NEXT: Washington gets a bye week before hosting San Francisco on Oct. 13.; Kansas City returns to the road to face Houston on Sunday night.