Crisis or not, the New York Rangers needed this win. When your worst skid of the season coincides with a hard charge by the Pittsburgh Penguins that threatens the big lead you've built over the long season, it is hard to keep out the doubt. The Rangers needed nearly every second Sunday night to beat the New York Islanders 4-3 in overtime, snap a three-game regulation losing streak, and maintain a four-point lead over the surging Penguins, who are closing in on the Broadway Blueshirts atop the Atlantic Division and Eastern Conference.