DALLAS (AP) — There have been wild swings of momentum in the Western Conference Final, and something that has happened only one other time this late in the NHL playoffs. After Edmonton and Dallas both came back from multiple-goal deficits to win while splitting the past two games, this is now a best-of-three for a spot in the Stanley Cup Final. “You look back at this series ... there’s four games that Dallas thought they could have won, and we feel there’s four games that we could have won,” Oil