Courtney Brown's disappointing sophomore season officially ended Wednesday when he was placed on reserve-injured with a high-ankle sprain.
Brown played in just four games this season, missing the first six with a sprained right knee suffered in the preseason finale against Carolina Aug. 31.
"Other than having an idea of schematically what we're doing, I don't think that he grew as a football player," Davis said of Brown, the first overall pick in the 2000 draft. "It's not something that he can't and won't overcome, but it's going to put a real premium on minicamps and quarterback schools and training camps.
"He missed some significant opportunities to get better. When you're young and in your first or second year in the league, you need to play and get blocked and get hit in the mouth and win some battles and lose some and find out what does or doesn't work."
ROSTER MOVE: Brown's place on the active roster was filled by offensive lineman Gaylon Hyder, who was signed to the practice squad Oct. 9. The TCU product was signed by St. Louis as an undrafted free agent in 1999. He was most recently with Chicago, which waived him Aug. 29.
INJURY REPORT: Linebacker Marquis Smith (hip) is doubtful. Listed as probable are linebacker Brant Boyer (finger) and tight end O.J. Santiago (ankle).
Defensive back Jason Simmons (hamstring) is out for the Steelers. Listed as questionable are running backs Jerome Bettis (groin) and Amos Zereoue (shoulder), and linebacker Joey Porter (shoulder). Probable are defensive back Brent Alexander (back); offensive linemen Alan Faneca (shoulder) and Rich Tylski; linebacker Earl Holmes (knee); receiver Hines Ward, and running back Jon Witman.