To say that injuries derailed the 2017 Mets would be an understatement. So numerous and so serious were the ailments that befell the team that they would crush preseason optimism into a 70-92, fourth-place finish, cost the manager and the head trainer their jobs and prompt a major revision in the team’s medical practices. The optimism? Start with Yoenis Cespedes, the biggest bat in the lineup, signing a four-year, $110 million contract. Second baseman Neil Walk
