The National Football League was on the brink last year. Not of death, but of the type of loss of relevance that has humbled baseball and boxing over the past generation or so.

Now as the NFL's 100^th season kicks off this week, there's a sense of fresh energy. But if football's going to make a full comeback, technology is going to have to play a big role.

CNBC's Jon Fortt and Eric Chemi discuss what to expect for the NFL for both this season and beyond. Plus, DraftKings CEO Jason Robins joins in to talk about the business of sports betting.

"Fortt Knox" is a weekly podcast from CNBC anchor Jon Fortt. Previous episodes of the program can be found here.