Gronk & Paul

Rob Gronkowski got up on the stage to dance when Paul McCartney played a concert at Fenway Park last night. Only Gronk could do something like that. He is all about increasing the value of his brand.

His career after his playing days are over is limitless. He will be the first to say that he has never spent a dime from his NFL game checks. He lives off his endorsements. Players would be wise to take a page from his book.