Kaepernick (shoulder) will play in Friday's preseason game against the Packers, the San Jose Mercury News reports.
Kaepernick is ready to play after sitting out the first two preseason games with a sore shoulder. While he will suit up Friday, he will not start, as that spot will again be filled by Blaine Gabbert. The two remain in competition to start at quarterback Week 1, and Kaepernick will get a chance to stake claim to the job Friday night.
Lewis suffered a torn ACL during Sunday's preseason opener and will now miss the remainder of this season, NFL.com's Ian Rapoport reports.
Lewis was forced out during the third quarter of Sunday's game, when he was the second signal-caller used in wake of Colin Kaepernick (shoulder) being sidelined. However, now that his season has already come to a close, rookie Jeff Driskel should see more reps behind Kaepernick and Blaine Gabbert in practice.
Tartt (undisclosed) was activated from the non-football injury list Saturday, Aaron Wilson of the Houston Chronicle reports.
Tartt was sidelined after tweaking a muscle, but it is unclear where on his body the tweak occurred. However, it does not appear to be a serious issue, as he has returned after a one week absence. The 24-year-old currently projects to be the teams back up strong safety.
Nkemdiche (ankle) is expected to play in Sunday's preseason game against the Texans, the Cardinals official website reports.
Head coach Bruce Arians said Nkemdiche could get extensive playing time to make up for his absence through training camp and the first two weeks of the preseason. The first-round rookie has probably missed out on any shot he might have had to push for a starting job, but he still has time to earn a key role in Arizona's d-line rotation.
Fitzgerald (knee) wasn't expected to practice Thursday but was seen in pads prior to drills, Josh Weinfuss of ESPN.com reports.
Fitzgerald may have been able to change the mind of head coach Bruce Arians, who has been the driving force behind holding out the wide receiver as he tends to a slight MCL sprain. Individual drills would be a good start Thursday, but there's no need for Fitzgerald to push his luck with more than two weeks remaining before the regular season opener.
Okafor has opted to avoid surgery and play with a torn biceps, Ian Rapoport of NFL Network reports.
Okafor sustained the injury in Tuesday's practice, the second such torn biceps in his three-year career. In 2013, surgery was ordered up for the then rookie, but examinations may have revealed that the tear was less severe than three seasons ago. The pass rusher has totaled 10 sacks the past two campaigns, while logging 66 and 58.5 percent of the defensive snaps, but the addition of Chandler Jones along with the injury could very well result in a scaled-back role.
Brown (concussion) was removed from practice early Thursday, Josh Weinfuss of ESPN.com reports.
One day removed from missing practice due to a headache, Brown took the field Thursday in a no-contact yellow jersey, as he did both Sunday and Monday of this week. While his early departure may have been planned, the fact that his symptoms can be traced to a concussion doesn't bode well for immediate clearance from the NFL's protocol for head injuries.
Jenkins (hand) returned to practice on Sunday, Mike Jurecki of Fox Sports 910 reports.
Jenkins had surgery for a broken hand at the start of August. He was expected to miss anywhere from 2-to-3 weeks, so his return Sunday appears to be on the early side of that original projection. Jenkins will have to battle for a role as a depth option at cornerback for the upcoming season.