Professional partier — oh, and NFL star — Rob Gronkowski was the main attraction at the season-opening Daytona 500, and celebrities came out in full force to watch NASCAR on Sunday in Fontana, California. How about this? NASCAR, no matter how many story lines or rule changes or celebrities lining the grid, is an underwhelming overall product. Even with its new stage format, events are too long in this day and age of instant gratification — even the NFL recently announced ways it is going to try to shorten games — and the racing itself often isn't all that exciting until the end. North Carolina forward Luke Maye hit the shot of his life — the game-winner Sunday over Kentucky to send the Tar Heels to the Final Four — then received a standing ovation when he showed up for his 8 a.m.