For a moment, Adam Duvall could barely stand. The Red Sox slugger had just fouled a 99 mph sinker right off the top of his foot and needed a solid minute to gather himself. It wasn’t clear if Duvall would be able to continue, but with two men on and the game tied in the top of the 10th, the outfielder stepped back into the box and pulled the next pitch he saw 371 feet for the go-ahead three-run…