The San Francisco 49ers on Thursday had a mixed bag of injury news on their practice participation report.

There were three changes from Wednesday's report, one of which was left tackle Trent Williams returning as a full participant after getting his usual rest day.

In a spot of good news, running back Christian McCaffrey returned to action in a limited capacity after missing Wednesday's practice while nursing a hamstring issue that cropped up in the 49ers' Week 7 loss to the Atlanta Falcons. Cornerback Upton Stout didn't have his status changed, but he did get out of a non-contact jersey. That good news was countered by an unfortunate development for wide receiver Christian Kirk. The veteran WR was limited by a knee injury Wednesday and then missed Thursday's session. That doesn't bode well for his availability in Week 9.

Here's the full practice report from Thursday:

Did not participate

• WR Mike Evans (ribs, Achilles)

• WR Christian Kirk (knee)

• S Siran Neal (knee, foot)

• WR Deebo Samuel (hamstring)

Limited participation

• DE Nick Bosa (knee, calf)

• LB Luke Gifford (groin)

• CB Nate Hobbs (adductor)

• RB Christian McCaffrey (hamstring)

• WR Demarcus Robinson (ankle)

• S Marques Sigle (ankle)

• CB Upton Stout (shoulder)

• LB Garret Wallow (hamstring)

Full participation

• DE Mykel Williams (knee)

• LT Trent Williams (rest)