Yankees’ Aaron Boone gets defensive over growing Gary Sanchez saga

Aaron Boone has backed Gary Sanchez since he was hired as manager nearly two years ago. And that hasn’t changed even as the Yankees catcher’s prolonged slump has extended well into October. Since his return from a strained groin, Sanchez closed out the regular season 1-for-6 with four strikeouts and is just 2-for-21 with three…