When local high school athletes begin competing for championships in the California Interscholastic Federation’s (CIF) Sac-Joaquin Section next month, they will be competing for a new unique honor in addition to the coveted section championship banners. Crystal Creamery has signed on as a sponsor with the Sac-Joaquin Section and, borrowing a page from Wheaties, will be featuring Section Champions on milk cartons to honor the success of student athletes in all sports beginning this fall. Crystal Creamery will produce special commemorative milk cartons featuring Section champions for fall, winter and spring sports as well as provide nutritional information for athletes …