Newton had one of the great NFL seasons in 2015 when he won the MVP award. However, his decline was stark and he became a free agent after leaving the Panthers. Unfortunately, he hung on for too long and failed to retire. He signed contracts with the Patriots and returned to Carolina but it didn’t work out.
That’s because his body failed him and he couldn’t stay fit. Newton went 13-24 in his final starts for the two teams as his form deteriorated. It’s a shame to see such a gifted athlete suffer such a downturn in performance. But sometimes it’s impossible to recapture the old magic (via Sports Illustrated).