NASHVILLE, Tenn. — Down early Saturday night in Game 3 of the Stanley Cup Final, desperately needing a win against the defending-champion Pittsburgh Penguins, the offensive floodgates opened for the Nashville Predators. The onslaught consisted of five goals over 27:19 in Nashville’s emphatic 5-1 win that cut Pittsburgh’s lead in the best-of-seven series to 2-1.