The Islanders executed the first major step of their trade-deadline plan Tuesday afternoon when they sent defenseman Andrew MacDonald to the Flyers in exchange for a 2015 second-round pick, a 2014 third-round pick, and forward prospect Matt Mangene.

After the deal was finalized, Michael Grabner scored at 3:53 of overtime to give the Islanders a 3-2 triumph over the Jets in Winnipeg, Manitoba. Anders Nilsson made 36 saves in nets for the Isles.

MacDonald, 27, was leading the team with just over 25 minutes of ice time per game, and was the runaway leader in the league with 198 blocked shots. The career Islander was drafted by the organization in the sixth round (160th overall) of the 2006 draft, and is a pending unrestricted free agent making just $550,000 this season. He had recently turned down general manager Garth Snow’s contract offer of four years at $16 million, and since that time has been shopped around the league in hopes of bringing back a first-round pick.

This return is at least in part recouping what Snow had sent to the Sabres in late October as part of a deal that brought the Islanders Thomas Vanek, shipping Buffalo a conditional first-round pick, a second-rounder in 2015 and another free agent-to-be, forward Matt Moulson.