One of the big themes for the Boston Red Sox in the 2021 season was surprising amounts of health in their starting rotation. It was a group that seemed like it was going to collectively spend a whole lot of time on the injured list, but they somehow managed to keep everyone healthy all year. Just a few days into camp, and we already have our first injured starting pitcher of the year, though it didn’t happen at camp. That would be Chris Sale, as Chaim Bloom announced Wednesday morning that the Red Sox ace has a stress fracture in his rib cage and will miss Opening Day.