Grayson Savery will serve as honorary captain for the Kennett High School football team, Friday night. KENNETT SQUARE — When Kennett High School’s varsity football team takes the field for its first home game of the season on Friday, September 2, a very courageous little boy will lead the charge. On Halloween 2012, when he was two years old, Grayson Savery was diagnosed with a form of pediatric...