Pittsburgh Steelers running back James Conner is not expected to play Sunday against the visiting Los Angeles Rams, the Pittsburgh Post-Gazette reported Thursday.

Conner was downgraded from limited participation at Wednesday's practice to a non-participant on Thursday, as he continues to work back from an AC joint sprain in his shoulder sustained in Week 8 against Miami. Earlier in the week, head coach Mike Tomlin sounded optimistic about Conner's availability for Sunday.

The Steelers also will be without Benny Snell Jr. (knee), who officially has been ruled out, while fellow running back Trey Edmunds (ribs) has yet to practice this week. Jaylen Samuels started last week in Indianapolis, totaling eight carries for 10 yards and 13 catches for 73 yards.

Meanwhile, left guard Ramon Foster also joined Conner in being downgraded Thursday. Foster was limited on Wednesday, but he did not practice Thursday as he remains in the concussion protocol.

Conner, 24, has 97 carries for 380 yards and four touchdowns in seven games this season after reaching the Pro Bowl in 2018 with 973 yards and 12 scores.

--Field Level Media

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