LAS VEGAS — On Friday afternoon Golden Knights defenseman Zach Whitecloud reminisced about playing hockey on outdoor rinks in Brandon, Manitoba, where he and his friends would pretend they were playing for the Stanley Cup. Asked what player he would pretend to be, he smiled and replied, “Zach Whitecloud.” Advertisement Saturday night in Las Vegas he did it for real. With the puck on his stick in the third period of a tie game in the Stanley Cup Final, Whitecloud delivered a game-winning goal that blew the roof off of T-Mobile Arena. “When you get to do it for real,…