Owner Jerry Jones told 105.3 The Fan on Tuesday there is a chance left tackle Tyron Smith (back/groin) could play Thursday versus the Los Angeles Chargers, via NFL Network's Jane Slater.
Smith worked with the first team in practice Tuesday, with Byron Bell occupying right tackle while La'el Collins was limited with a back injury.
Prescott has been under siege with replacement blockers on his blind side, producing a career-low 30.4 passer rating on 18-of-31 passing for 145 yards and zero touchdown tosses with three interceptions in last week's debacle versus Philadelphia.
Here are other injuries and roster moves we're tracking Tuesday:
Tomlin said tight end Vance McDonald (knee) and safety Mike Mitchell (ankle) would also be monitored in practice this week.
- Washington Redskins coach Jay Gruden said running back Chris Thompson (ankle), wide receiver Terrelle Pryor (foot) and offensive lineman Spencer Long (knee) will be placed on injured reserve.
- Detroit Lions defensive end Ezekiel Ansah (back) took part in practice Monday and Tuesday after being inactive last week.