After the first game on the Saturday slate went to double-overtime, Sunday’s schedule of Stanley Cup Playoff games wasn’t as kind early. The Hurricanes blew out the Islanders and the Bruins beat down the Panthers. But then the page turned to the Western Conference, where the games became more competitive. Jake Oettinger, who some fans still whine about not being drafted by the Blackhawks, was magnificent as Dallas held on to beat Minnesota — Oettinger’s home state — 3-2 in an exciting game. And then came the nightcap.