Kansas City Chiefs outside linebacker Justin Houston's recovery from a knee injury appears to be progressing faster than expected, with the Chiefs indicating he still has a chance of playing Sunday against the Oakland Raiders.

"He's made big improvements over the past two days," said head coach Andy Reid on Wednesday.

Reid didn't rule Houston out for Sunday, but said he won't participate in practice Wednesday.

Houston reportedly sustained a sprained PCL in last Sunday's victory over the Buffalo Bills and was considered week to week, meaning it was unlikely he'd be able to play.

If Houston is able to return to practice soon, he could beat the odds and stand a decent shot of suiting up Sunday.