There was no doubt as to what General Manager Steve Yzerman was shopping for at the trade deadline. It was the same thing he had been looking for a long time: defense. As the days ground down to the end of February it wasn’t a matter of if he would add to the blueline, but who he would add. Erik Karlsson was the front runner, then it was Ryan McDonagh, then it was back to Karlsson with a little Mike Green as a dark horse candidate. When the dust settled it was McDonagh that swapped shades of blue to become the key piece that Mr.