A junk defense used against a horizontal stack. The mark applies a flat mark, taking away any easy deep throws. The two off side handlers leave their marks slightly to poach into the throwing lanes making under cuts difficult while allowing swings to go off without much pressure. Finally each cutter defender should be fronting their mark to take away any easy under cuts and try to force them deep (since the mark is taking away deep throws).
This works especially well after the original cut to the middle may have received the disc previously (see Boneyard Sideline #1). That downfield defender almost NEVER follows that player all the way to the backfield dump. THis is called "#2" because the cutter makes 2 cuts - first horizontal, then backfield Ideally #6 can be hit in strike cut with power position to huck.