Guard Chris Williams left the game in the second quarter with an apparent head injury and Stacy followed suit soon after, just before the two-minute warning. Cornerback Trumaine Johnson suffered a head injury of his own early in the third quarter when he went to tackle Chicago receiver Earl Bennett. All three players were evaluated for concussion-like symptoms.
Rams coach Jeff Fisher didn't offer much in the way of updates after his team's 42-21 victory, but it's common procedure for players suspected of having concussions to go through a battery of tests before they can be cleared to return to action.
Stacy was on pace for the best game of his young career at the time of the injury, having rushed 12 times for 87 yards and a touchdown in the first half. Fellow rookie Benny Cunningham replaced Stacy as the team's primary running back.
Williams, who has started every game for the Rams at left guard, suffered a blow to the head on Stacy's 16-yard run with 2:44 to go in the first half. Shelley Smith replaced Williams at left guard for the rest of the game.
Johnson's injury was the scariest as he remained motionless on the field for a few moments after making contact with Bennett. The cart was brought out almost immediately but Johnson eventually got up and walked off under his own power. Rookie Brandon McGee replaced Johnson.
In other injury updates, Fisher announced that cornerback Cortland Finnegan, who was placed on injured reserve Saturday, has a fractured orbital bone in his left eye. Fisher said Finnegan suffered the injury in week 4 against San Francisco but elected to play through it before a second opinion during the team's bye week advised him to shut it down.
"He needed to seek treatment and or there may be some corrective procedure they can do," Fisher said. "Cort played through it and he wanted to be a part of this but this injury became prohibitive for him."
Finnegan said he's looking at dates in December for surgery but it hasn't been set yet.