Curl was limited in practice Thursday due to an ankle injury, Sarah Barshop of ESPN.com reports.
Bosa (knee/calf) was a non-participant at Thursday's practice, Matt Barrows of The Athletic reports.
The Rams designated Trost (hamstring) for return to practice from their injured reserve list Thursday.
Kirk (calf) was limited in his return to practice Thursday, Matt Barrows of The Athletic reports.
Head coach Kyle Shanahan said Thursday that the 49ers will "hold off" on placing Samuel (hamstring) on IR due to the team's bye in Week 8, Vic Tafur of the Athletic reports.
Juszczyk (knee) will be limited at Thursday's practice, head coach Kyle Shanahan told reporters Thursday, Cam Inman of Bay Area News Group reports.
Head coach Kyle Shanahan said Thursday that Robinson (ankle) has an "outside chance" to return from injured reserve for the 49ers' Week 7 game versus the Falcons but is more likely to be activated following the team's Week 8 bye, David Lombardi of SFStandard.com reports.
Head coach Kyle Shanahan said Evans won't practice Thursday due to rib and Achilles injuries, Cam Inman of The San Jose Mercury News reports.
Kirk (calf) had his 21-day practice window opened Thursday.