Addison was wrapping up a trip to his hometown of Birmingham, Alabama and getting ready to board a flight back to Charlotte when his phone rang. His mother was on the line with bad news.
His grandfather was in the hospital.
"I was like, 'Do you think he's going to be alright?' And she said, 'just come back,' so I did," Addison said. "I didn't take the flight."
Addison's grandfather had problems with his blood pressure and had to be taken to the hospital by ambulance. Addison got to see his grandfather, but his troubles continued. He caught pneumonia and suffered a stroke. Eventually, Addison and his family said goodbye.
It was a day that the Panthers' unstoppable defensive end felt a pain he'd never felt. The man who took him to church, fed him and his siblings Sunday dinner, and taught him valuable life lessons was gone.
But Addison felt some comfort in knowing another season was coming and seeing him on that field always made his grandfather proud.
"He was probably more proud of me than I was," Addison explained. "That's one guy I always think about when I get on the field."
Unfortunately, his grandfather isn't the only one.