Black (groin) is on track to play Sunday against the Dolphins, Adam Schefter of ESPN reports.
Black popped up on Thursday's injury report as a limited participant due to a groin injury, and he was given a questionable designation after getting in another limited session Friday. While there is reason to believe he will take the field Sunday, his availability will not be confirmed until the 49ers release their inactives 90 minutes before Sunday's 4:25 p.m. ET kickoff.