The Carolina Panthers quarterback wasn't seen throwing during the portion of practice open to the media, but dismissed concerns about his shoulder issue.
"I'm healthy enough to play and I'm not going to let nothing hold me back," Newton said, via Max Henson of the team's official website.
Newton has been dealing with soreness in his throwing shoulder. The quarterback had shoulder surgery in 2017, and intimated the current issue could be lingering from that procedure.
"We just do the best we can with it...," Rivera said of Newton's shoulder. "He's going to do whatever he can to try to win."