The Chiefs secondary took two big hits on the eve of Sunday’s rivalry game against the Broncos.

Kansas City downgraded rookie cornerback Mansoor Delane to out with a shoulder injury, and it placed cornerback L’Jarius Sneed on injured reserve.

The Chiefs added Delane to their injury report Thursday as a non-participant after he injured his shoulder in Wednesday’s practice. He dealt with a shoulder injury in training camp, and he aggravated the injury in Week 1.

The first-round pick has totaled 27 tackles, an interception and five passes defensed in five games this season.

Sneed missed Wednesday’s practice (personal/knee) but returned to limited work Thursday and Friday and had a questionable designation.

He will miss at least the next four games.

The Chiefs also announced they signed cornerback Melvin Smith to the active roster from the practice squad and activated defensive end Tyreke Smith from the practice squad to the game-day roster.