Luis Severino’s recent struggles have brought up eerie, unpleasant memories for New York Yankees fans. Phil Hughes. Joba Chamberlain. Ian Kennedy. Ivan Nova. Manny Banuelos. Andrew Brackman. The past five years have heard the Yankees brass convincing people that their next ace was on the horizon, that their pitching prospects were indeed elite. The sad truth is that not since Andy Pettitte have the Yankees produced a starting pitcher with any sort of staying power.

Severino is going through a rough patch, there is no doubt. By no means should the Yankees give up on him; however, he is in desperate need of adjustments. He has poor command of the strike zone, and his fastball, although fast, doesn’t seem to miss too many bats. Those adjustments were needed by plenty of the Yankees top pitching prospects before him, but none seemed to make…