Here are five reasons the Islanders clinched:
1. Home cooking
There was obviously some uncertainty regarding how the Islanders would fare in their first season at Barclays Center after 43 years at Nassau Veterans Memorial Coliseum. But from a results standpoint, the move has undoubtedly been a success. With their 5-2 win against the Tampa Bay Lightning on Monday, the Islanders are 25-10-4 in Brooklyn.
2. Goaltending depth
There wasn't much insurance behind No. 1 goalie Jaroslav Halak last season, but general manager Garth Snow shored that up with the signing of Thomas Greiss, who may have exceeded expectations. Greiss was arguably the Islanders' most valuable player during the first half of the season and will likely get the call in Game 1 of the postseason while Halak recovers from a lower-body injury sustained March 8. Greiss has started 36 games and has won 22 of them, both career-highs, to go along with a 2.37 goals-against average and a .924 save percentage.
3. Last hurrahs?
The season is nearly over and two key forwards on the Islanders roster, Frans Nielsen and Kyle Okposo, have not agreed to contracts for 2016-17 and beyond. Nielsen, their best two-way player, was drafted by the Islanders in 2002 and has played more than 600 NHL games, all with New York. Okposo, one of their most consistent forwards this season, was their first-round pick in 2006 and is second on the team with 62 points in 77 games. It's hard to imagine where the Islanders would be without either player this season.