Jaromir Jagr is 41 years old. He has two Stanley Cup rings. He’s got piles and piles of trophies and other hardware. He’s made a couple boatloads of money. He’s one of the greatest ever to lace up the skates, and he’ll be enshrined into the Hall of Fame shortly after he finally hangs ‘em up. But if you watched Jagr play Monday night in Game 3 of the Bruins’ first-round matchup with the Toronto Maple Leafs, you believe the old man was a rookie chasing down his first Cup. Either that, or you might have gotten a better understanding as to why he’s a legend. Jagr was “vintage Jagr” in Game 3, one of the best players in the building as the Bruins quieted a rowdy Air Canada Centre crowd on the way to a 5-2 win. He may not have filled up the statsheet — although he did have an assist and six shots in 15:18 of ice time — but it was clear to see that he still has at least a little something left. It’s not surprising that Jagr impressed his head coach, either. “It doesn’t matter how old he is, it doesn’t matter how long he’s been in the league, it doesn’t matter how accomplished he is, he’s a real proud competitor,” B’s head coach Claude Julien gushed. “He takes everything at heart.” It hasn’t necessarily been a smooth ride for Jagr since he joined Boston at the trade deadline. Jagr has already seen multiple linemates next to him, and he also battled some pretty gnarly flu-like symptoms in the final weeks of the season and even into the postseason. If Jagr’s play Monday was any indication, he’s starting to feel a lot better.