Amendola (clavicle), the team's leading receiver, will miss Sunday's game, as will offensive tackle Rodger Saffold.
Linebacker Mario Haggan (thigh) was limited in Wednesday's practice, but was out for all of Thursday's session, indicating a possibility he won't be available in Week 6. Defensive end William Hayes (back) was also downgraded to watching Thursday's drills after a limited practice on Wednesday. Running back Brit Miller (ankle) missed Wednesday's practice, but returned for a full workload Thursday.
St. Louis trails San Francisco and Arizona by a game in the NFC West heading into Week 6. The Rams are already 2-0 in the division, handing the Seahawks and Cardinals defeats earlier this season.