In an article from 2011, Alain Vigneault disclosed that it took him three seasons to be able to tell Henrik and Daniel Sedin apart.
Vigneault said that he learned who was who when Daniel was injured for about six weeks and away from the team. He added that when Daniel returned he felt embarrassed that he couldn’t tell them apart before.
Henrik said that Vigneault sometimes forgets players first names.
John Tortorella said recently that he has no idea which twin is which.