There’s no doubt that the breakout star of the Bruins-Rangers second-round series was rookie defenseman Torey Krug.

He was so good in the series against New York that John Tortorella even praised the undersized blue-liner — even if the head coach couldn’t come up with his name right away. Krug also broke some records in the series, becoming the first rookie to score a goal in four of his first five playoff games.

NESN’s Billy Jaffe says the Penguins will be keying in on the rookie known for his sharp one-timer on power plays in the Eastern Conference finals. But Krug may be able to use his size to his advantage, since bigger players will come at him more aggressively.

Watch the video above, or check it out on NESN’s YouTube channel, to hear more about Boston’s current favorite young defenseman.