Newton left Friday’s preseason game against the Patriots soon after New England linebacker Jamie Collins stepped on the Auburn Tiger’s back.
However, after X-rays turned up negative, Newton appeared at the Panthers’ facility feeling soreness; and another test revealed the fracture.
The team announced that while Newton will not play in team’s preseason finale, the injury should not prevent him from starting in Week 1 against Tampa Bay.
Carolina finished 12-4 a season ago but with plenty of personnel changes to the Panthers offense, Newton already had his work cut out for him.
A rib injury can only further complicate matters for a team that will struggle to return to the postseason in 2014.