Coach Kyle Shanahan said Tuesday that Williams (knee) is considered a "long shot" to play in Week 1 against the Rams, Dylan Grausz of NBC Sports reports.
Bosa's (knee) tendinitis symptoms have been subsiding recently, David Lombardi of SFStandard.com reports.
Black (thigh) looked like himself at Tuesday's practice, Grant Cohn of SI.com reports.
San Francisco coach Kyle Shanahan said Tuesday that Purdy has a "good chance" to play in Thursday's preseason matchup with the Chargers, Nick Wagoner of ESPN.com reports.
Coach Kyle Shanahan said McCaffrey (undisclosed) would've practiced Tuesday if the 49ers hadn't been in a joint session with the Chargers, Nick Wagoner of ESPN.com reports.
Coach Kyle Shanahan said after Tuesday's joint practice with the Chargers that Evans (quadriceps) experienced some tightness and doesn't believe the issue to be a serious one, Matt Maiocco of NBC Sports Bay Area reports.
Evans exited Tuesday's joint practice with the Chargers due to a left foot/ankle injury, Nick Wagoner of ESPN.com reports.
Black (thigh) is back in uniform for Tuesday's practice session, Matt Barrows of The Athletic
Coach Mike LaFleur confirmed Tuesday that Love does not need surgery to address his ankle injury, Tyler Drake of ArizonaSports.com reports.