KANSAS CITY, Mo. — Kansas City Chiefs safety Tyrann Mathieu thanked fans on Twitter for the prayers and the support he received in the last two days since coming off the field injured.

Mathieu was taken out in the first quarter Sunday due to a concussion.

Mathieu’s helmet collided with teammate defensive tackle Jarran Reed in the first quarter. After Mathieu was examined in the sideline medical tent, he went back to the locker room, where he was officially ruled out.

As of now, the Honey Badger remains in the league’s concussion protocol until further notice.

“He’s one of the guys that Rick (Burkholder) is seeing this morning and our docs,” Head coach Andy Reid said Monday. “So, he’s still in the protocol, and he’s still going through it, but he does feel good. So, we’ll see how that goes going forward.”

In addition to Mathieu going through concussion protocol, Rashad Felton’s status is uncertain for Sunday’s game as well. He’s been battling a back injury.

The Chiefs will look for redemption against the Cincinnati Bengals Sunday in the AFC Championship game as they try to reach the Super Bowl for the third-straight year.