JACKSONVILLE – The Jaguars could be without their best offensive lineman Sunday.
Brandon Linder, the Jaguars' starting right guard and their most consistent offensive lineman over the past two seasons, did not practice Thursday after leaving practice with a shoulder injury Wednesday afternoon.
Jaguars Head Coach Gus Bradley called Linder "50-50" to play in New England Sunday.
"We'll see as he goes through the rest of the week," Bradley said Thursday as the AFC South-leading Jaguars (1-1) prepared to play the AFC East-leading New England Patriots (2-0) at Gillette Stadium in Foxboro, Mass., Sunday at 1 p.m.
He sustained the injury Wednesday in a pass-rush drill.
"It didn't look like much on tape," Bradley said.
Linder, a second-year veteran, has started 17 games at right guard for the Jaguars in two seasons.
"It's just frustrating," Linder said. "Things happen for a reason."
Tyler Shatley, a second-year veteran, worked with the first unit in practice Thursday and could start in Linder's place Sunday if Linder can't play. Bradley said rookie third-round selection A.J. Cann also is a possibility.
"A.J. and Shatley – those guys will both play (if Linder can't play)," Bradley said. "They had some reps today. We'll make that decision as we get closer. We haven't decided because we don't know how Linder is."
Also on the offensive line, left tackle Luke Joeckel practiced limited for a second consecutive day after missing Sunday's game against the Miami Dolphins with an ankle injury. Sam Young would start a second consecutive game left tackle if Joeckel can't play.
"We'll see on him," Bradley said. "Yesterday I know he was a little bit sore, but today he felt better. Some of these guys are more day-to-day as we go through this."
The Jaguars got better news on the injury front at the running back position, with Toby Gerhart working full after missing the first two regular-season games with an abdomen injury. He had been limited in practice on Wednesday.
With backup running back Denard Robinson missing practice and expected to miss Sunday's game with a knee injury, the Jaguars had entered the week with starter T.J. Yeldon and backups Bernard Pierce and Corey Grant as the three healthy running backs.
"Especially with the injury to Denard, it's that much more important – and (Gerhart) is a different style of runner,'' Bradley said.
Wide receiver Marqise Lee (hamstring) also was upgraded to full status Thursday. Lee had worked limited Wednesday after playing 22 snaps against Miami Sunday. He went through the entire practice and Bradley said he got a few more repetitions than he had been getting.
"He looked good," Bradley said, adding that he expects "some sort of a limitation" on Lee's repetitions against the Patriots Sunday.
The Jaguars released their second injury report of the week Thursday, with defensive tackle Sen'Derrick Marks (knee) and tight end Julius Thomas (hand) continuing to be listed as limited. Neither has played this season. Thomas will be reevaluated next week and Marks is not expected to play Sunday.
Wide receiver Allen Hurns also worked limited with thigh soreness.
Defensive end Andre Branch (knee), cornerback Dwayne Gratz (ankle), strong safety Johnathan Cyprien (calf) and Robinson (knee) all missed practice for a second consecutive day.
Also Thursday, Bradley said the Jaguars had a good practice emphasizing first and second downs.
"Just overall a good practice," Bradley said.