From Tyler Kepner:Brian Cashman knew he would be at a ballpark Wednesday. His plan was to drive to Moosic, Pa., to see Sergio Mitre pitch and Xavier Nady play the outfield for the Yankees’ Class AAA team. Then he watched the way the major league team played Tuesday.After another dreary loss, Cashman, the Yankees’ general manager, decided to fly to Atlanta instead. His presence in the middle of a trip lent a sense of gravity to the Yankees’ recent struggles. They had lost nine of their last 13...