Carolina Panthers general manager Marty Hurney told reporters that quarterback Cam Newton suffered a mid-foot sprain in his team's 10-3 preseason loss to the New England Patriots on Thursday.
Per Jourdan Rodrigue of The Athletic, the team is "cautiously optimistic [Newton] will be ready for Week 1."
The Panthers' Week 1 game will be against the defending NFC champion Los Angeles Rams at home on Sunday, Sept. 8.
Newton suffered the injury to his left foot after a sack.
This article will be updated to provide more information soon.