He’s only 19 but defenseman Dougie Hamilton is already showing why the Bruins’ management felt comfortable putting him right into the fire of the NHL .
Hamilton had two assists as the Bruins defeated the New York Islanders  4-2 Friday night at TD Garden. The crowd began to chant his name in the third period after his outlet pass set up Patrice Bergeron ‘s insurance goal. The players are already singing to him in the locker room, asking him to — as the song says — “Teach me how to Dougie.”
Claude Julien  noted Hamilton work in juniors that prepared him for his debut early on in this shortened season.
“There’s a couple of things that’s happened to help him along the way here,” Julien said. “He’s been playing since September with his junior team, he’s gone to the World Juniors, so he’s played in high-caliber tournaments. So, he’s got that experience and he’s come in here with a good jump, having played four months of hockey and right now he’s playing with a lot of confidence. The guys that he’s playing with have been extremely helpful with him on the ice.
“I think that’s why our [front office] guys drafted him, because they saw a lot of things we’re seeing right now. We liked his size, we liked the way he moved on the ice, but at the same time, we thought he had real good hockey sense. He sees the ice well, he finds the passing lanes and you saw on that goal, breakout out of our own end. You see the guy scoring, but it all starts from our end, and that was from his pass to [Brad] Marchand  and to Bergy [Patrice Bergeron ] for the breakaway. Those kind of things is what our scouts saw in him and those kind of things he’s demonstrating right now. You have to be pleased and impressed with a young player playing the way he has been.”