A recently leaked email from Bill Belichick to his girlfriend, Jordon Hudson, and the rest of his camp did more than divulge the legendary coach’s public-relations tactics for his upcoming book.

In his new book, legendary coach Bill Belichick makes comparisons between Tom Brady and Kansas City Chiefs' star quarterback Patrick Mahomes.

Coach Bill Belichick shares a 'controversial' opinion about quarterbacks Tom Brady and Patrick Mahomes' leadership style in his new book, 'The Art of Winning,' which published on Tuesday, May 6.