According to the Kansas City Chiefs, four players are being held out of Thursday’s practice leading up to their critical matchup against the New England Patriots this Sunday in Foxboro, Massachusetts.

CBs Mo Claiborne and Rashad Fenton will be held out of practice. So will RB Damien Williams. DE Frank Clark won’t practice because he is sick, not because of the shoulder. — Arrowhead Pride (@ArrowheadPride) December 5, 2019

Defensive end Frank Clark — who had limited participation during Wednesday’s practice because of the shoulder injury he sustained during Sunday’s game against the Oakland Raiders — is being held out of practice. The Chiefs say he is missing Thursday’s practice because of an illness.

It is not clear whether that means Clark’s shoulder injury is no longer a problem.

Just like on Wednesday, cornerbacks Morris Clarborne and Rashad Fenton — along with running back Damien Williams — are not practicing on Thursday.

Williams is still recovering from the rib injury he suffered against the Los Angeles Chargers in Week 11. Claiborne is reported to have a shoulder injury, while Fenton is dealing with a hamstring issue. Both of these injuries took place during the Raiders game.

Running back Darrel Williams — who was held out of practice on Wednesday — was placed on injured reserve Thursday morning. Cornerback Alex Brown was elevated from the practice squad to take Williams’ roster spot, and wide receiver Gehrig Dieter — whom the Chiefs waived on Tuesday to make room for the signing of running back Spencer Ware — was re-signed to the practice squad after clearing waivers.