What happened: The Return of Blue & Red practice marked Buffalo's first on-field session inside the venue. The alternate pairs an all-gray jersey and pants with a royal-blue Charge helmet.

Why it matters: The Bills are entering their inaugural season in the replacement venue after 52 years across the street. NFL rules allow Buffalo to use the set at home or on the road.

What to watch: Buffalo returns Aug. 18 for another stadium practice. The Nickel City set's game debut remains unscheduled.