49ers LCB Tramaine Brock (toe) is expected to miss his second-consecutive game in Week 3.
49ers TE Vance McDonald is day to day with a knee injury.
A source tells CSN Bay Area that Vernon Davis has avoided a significant left ankle injury.
49ers signed CB Leon McFadden to the practice squad.
The 49ers are "hopeful" RT Anthony Davis (hamstring) will resume practicing this week.
Vernon Davis is undergoing an MRI on his left ankle.
Vernon Davis (ankle) was spotted on crutches following Sunday night's 28-20 loss to the Bears.
Carlos Hyde had zero yards on four carries in Week 2 against the Bears.
Stevie Johnson caught two passes for 26 yards in Week 2 against the Bears.
Anquan Boldin had two catches for 34 yards in Sunday night's loss to the Bears.
Michael Crabtree caught seven passes for 82 yards and a touchdown in Sunday night's loss to the Bears.
Frank Gore rushed for 63 yards on 13 carries and a touchdown in Sunday night's Week 2 loss to the Bears.
Colin Kaepernick completed 21-of-34 passes for 248 yards, one touchdown, and three interceptions in Sunday night's loss to the Bears.
Vernon Davis has been ruled out of Sunday night's Week 2 game against the Bears with an ankle injury.
49ers TE Vance McDonald left Sunday night's game with a knee injury, but later returned.