In case you've somehow forgotten how Matt Cassel became a star in the first place -- it all started when Patriots QB Tom Brady took a hit low in a Week 1 game against Kansas City last year, injuring his left knee.Cassel inherited the Pats' quarterback job and ran with it after that, parlaying his one season as a starter into a six-year, $63 million contract with the same Kansas City squad. And, despite an up-and-down preseason, Cassel -- in large part because of the amount of money ow...