More progress for three concussed Rams

EARTH CITY, Mo. -- Although they have yet to be officially cleared to play Sunday against the San Francisco 49ers, the St. Louis Rams' trio of concussed players appear to be trending toward a return a week after suffering their injuries.

Running back Zac Stacy, cornerback Trumaine Johnson and left guard Chris Williams all participated in Thursday's practice. They were not allowed to have contact yet but they were able to work at a normal tempo. They're officially listed as limited participation on the injury report.

"As protocol continues, we were able to get the three players that are going through the process with the concussions on the field today," Rams coach Jeff Fisher said. "No contact, but full speed and that's encouraging."

Fisher said the three players still have another hurdle to clear before they can be cleared and the final tests of the process will take place Friday. He did acknowledge that "everything looks good" for the potential return of all three players against the Niners.

Guard Harvey Dahl (knee) also made some progress and did some limited work with the scout team.

Cornerback Brandon McGee was the only addition to the injury report after he appeared to tweak his foot during practice. He's listed as limited.

Here's the full breakdown:

Did not participate: LB Will Witherspoon (not injury related)

Limited participation: Stacy, Williams, Johnson, Dahl, McGee, safety T.J. McDonald (shin)

Full participation: DE Eugene Sims (foot)