Woodley is listed as doubtful on the Steelers’ injury report though the seventh-year veteran is holding out hope of playing against the Lions.
“There is a great chance,” Woodley said of playing. “Two days left [to heal].”
Keisel, who is battling plantar fasciitis, and Foster are listed as questionable but each is also a long shot to suit up against Detroit.
Among the Steelers listed as probable are left tackle Kelvin Beachum (hip), right guard David DeCastro (ankle), right tackle Marcus Gilbert (ankle), center Fernando Velasco (knee), offensive tackle Mike Adams (ribs) and tight end Heath Miller.
Six offensive linemen are listed on the Steelers’ injury report but Foster is the only one expected to miss Sunday’s game at Heinz Field.
Rookie safety Shamarko Thomas (ankle) had been ruled out for the game earlier this week.