INDIANAPOLIS (AP) — Nick Foles threw two touchdown passes in relief of the injured Alex Smith to help the Kansas City Chiefs hold off Indianapolis 30-14 on Sunday.

It was a rough game for the Chiefs, who lost Smith twice after hits to the head and finished the game with Charcandrick West as their only healthy running back.

Smith was checked for a concussion in the first half and cleared to return, which he did in the second quarter. He left again early in the third quarter after Clayton Geathers shoved Smith’s head to the turf as the quarterback tried to slide underneath the tackle.

Smith was then diagnosed with a concussion and did not return.

Somehow, both quarterbacks kept the Chiefs’ offense in sync.

Foles’ 14-yard TD pass to Travis Kelce early in the second quarter made it 10-0. Smith made it 17-7 at halftime with a 13-yard TD pass to Jeremy Maclin, and after Smith’s second departure, Foles hooked up with Tyreek Hill on a 34-yard scoring pass for a 24-7 lead.

This time, the Chiefs (5-2) prevented Andrew Luck from pulling off another comeback — similar to the previous time these teams met in January 2014.

Luck has three come-from-behind wins this season and tried to deliver another one Sunday. but never got close enough to make it a serious threat.

Foles was 16 of 22 for 223 yards with no interceptions.

Luck finished 19 of 35 with 210 yards, two touchdowns, one interception and one fumble lost for the Colts (3-5).