New York Yankees starting pitcher Luis Severino (elbow) has left camp and is headed to New York for a battery of tests starting Monday. The Yankees don't know how long Severino will need to be shut down, and manager Aaron Boone said it's too early to say if the 26-year-old will be ready for the start of the season. Severino only feels pain in his right arm when he throws changeups, but two offseason MRI exams and a CT scan in the offseason didn't show any structural damage. The right-hander ...