Sony’s Hawk-Eye system, which uses cameras and AI to make calls, is set to be tested again next preseason. For more than 100 years, football has been officiated using a simple chain 10 yards long.

The NFL is about much more than what happens on the field across 80 minutes of action. It’s also about the show. Mascots are the cuddly, larger-than-life characters that interact with fans on ...