Corsi was referenced a few pages back.
The power play goal. Nylander starts off from our blue line, holding the point position. He should be watched by Mathias:
Melch is down low playing off Komarov, then Hyman. Mathews gets the puck, faces up for the shot, Mathias is watching the shooter, who was also being watched by Tanev. Melch has his man tagged in front, Mathias has no one. When Nylander creeps from the point he automatically becomes Mathiases responsibility, Hyman and Komorov are Melchs responsibility.
There is now way a down low dman is going to not watch the shot, turn around, ignore his net assignments and tag off on the creeping blue line player. Mathias was sleeping there.