The Stanley Cup playoff picture in the Western Conference is set, but five of the eight seedings in the East will come down to the final day of the regular season.
Sunday's tilt between the Ottawa Senators and Boston Bruins, originally scheduled for April 15 but postponed because of the Boston Marathon bombings, is the only game remaining on the NHL calendar, but it will have a big impact on the post-season matchups in the Eastern Conference.
Boston enters the game fourth in the East, while Ottawa is eighth. A Bruins victory in regulation moves them into second and sets up a series with the New York Islanders. Under that scenario, the Senators would remain eighth and take on the No. 1 seed Pittsburgh Penguins.
A Bruins victory in overtime or a shootout, meanwhile, would set up an Ottawa-Boston first-round series.
But Ottawa could spoil that party with a victory in Boston. That result would mean the Bruins taking on the Maple Leafs and the Senators meeting the Canadiens.
A single point for Ottawa against Boston would see the Islanders meet the Penguins in the first round.
Detroit was also on the bubble entering Saturday, but the Red Wings shut out the Dallas Stars 3-0 to qualify for the playoffs for the 22nd straight season.
The No. 5 L.A. Kings will begin their title defence in St. Louis where they will meet the No. 4 Blues.
The playoffs begin Tuesday.