ST. LOUIS (AP) -- St. Louis Rams quarterback Sam Bradford was very limited in practice, leaving his availability in doubt for Sunday's game at San Francisco.
"He didn't do much at all," coach Steve Spagnuolo said. "He's still a little sore, so we'll see where we're at tomorrow."
Bradford aggravated a high left ankle sprain in last week's loss to the Seahawks and didn't practice Thursday. Spagnuolo thought Bradford hadn't improved much since then.
Bradford, who was listed as questionable, was not made available to reporters.
Backup A.J. Feeley would make his third start if Bradford isn't able to go. One of Feeley's starts was the Rams' best game of the year, a 31-21 victory over the New Orleans Saints.
"It helps when you get reps in practice," Feeley said. "But I fully anticipate Sam being ready to go."
The Rams re-signed quarterback Tom Brandstater to the practice squad as insurance, releasing linebacker Eddie Jones.
Bradford didn't practice much leading up to the Arizona game in early November, but started in an overtime loss after missing two games with the injury. He had been listed as questionable.
"We're going to make sure he's OK," Spagnuolo said. "It's kind of like the Arizona game, we didn't play him until we knew he could get himself in and out of trouble."
Spagnuolo said Bradford was hurt making a throw, rather than getting the ankle rolled on by a tackler.
Wide receiver Danario Alexander (hamstring) has been practicing all week, giving the Rams a potential deep threat. Alexander has missed five games.
"Danario adds a little bit of a different element," offensive coordinator Josh McDaniels said Thursday of the 6-foot-5 Alexander. "He's got obviously a lot of size and length and has made some down-the-field plays for us that have really helped us."
Safety Darian Stewart (concussion) ruled himself out for this week, saying he didn't feel right, although the team has not made anything official and listed him as questionable. Spagnuolo said Stewart did a lot in practice Thursday but didn't feel well afterward.
"I'm not feeling normal," Stewart said. "Just playing it safe."
Defensive end Chris Long (ankle) missed his second straight day of practice and also was questionable, but said Thursday it was "100 percent" that he'd play. Defensive tackle Justin Bannan (shoulder) was questionable.
Punter Donnie Jones didn't test his sprained left ankle, saving it for game day. Jones was hurt when his cleats got caught in the turf trying to make a play on Patrick Peterson's 80-yard punt return for touchdown last week, but made a couple of punts after that.
Kicker Josh Brown is the backup punter.