Melton (concussion) is listed as questionable ahead of Sunday's game against the Rams, Tyler Drake of ArizonaSports.com reports.

Melton sustained a concussion during the Cardinals' Week 1 loss, but after a full practice session Friday, he has a chance to suit up Sunday. The rookie likely still hasn't passed concussion protocol with a neurological test since he's listed as questionable. Kei'Trel Clark projects to see more work in Arizona's secondary if Melton doesn't clear protocol in time for Sunday's contest.