The Penguins defeated the Islanders in six games.
Washington (4-10-5) has now defeated the Islanders (8-9-3) twice in as many meetings this season.
The Nordiques, who defeated the Islanders, 3-2, Friday night, have only lost one of their last eight games, but three ended in ties.
The Bruins defeated the Islanders by a score of 3-2.
The Ottawa Senators scored again on their fifth shot and went on to defeat the Islanders, 3-1.
The Rangers defeated the Islanders last night, 5-2, at the new, $65-a-seat Madison Square Garden where a crowd of 12,445 looked on.
The Flyers defeated the Islanders, whose game seems to be in an unfavorable holding pattern, by 4-2 this evening.
The Philadelphia Flyers, who defeated the Islanders, 4-1, finished second.
The Blue Sox finished in first place and defeated the Islanders four games to one in the playoffs to become league champions.
And three times, the Rangers have elevated their game and defeated the Islanders.