The Rams (3-2) are over .500 for the first time in six seasons, but are facing the loss of wide receiver Danny Amendola in their Week 6 game against Miami.
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.
Defensive end Eugene Sims (head) and defensive tackle Matthew Conrath (knee) were limited Wednesday, but returned to full participation 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.