Thielen was listed as a limited participant at Wednesday's practice due to an ankle injury.
The Panthers' receiving corps is banged up heading into the regular-season opener, as DJ Chark was sidelined Wednesday due to a hamstring injury, while Terrace Marshall (back) joined Thielen as a limited participant. As a result, the state of the group will be one to watch closely over the next two days of practice to see who among Thielen, Chark and Marshall are available Sunday in Atlanta.