THE ATHLETIC: Chasing Michael Rubin throughout the day Justin Bieber shocked Fanatics Fest

“Who has scissors?”

“Can someone go steal a Brunson jersey?”

Fanatics CEO Michael Rubin shouted for anyone within earshot on the jam-packed backstage platform before Trae Young could walk down the aisle for the WWE entrance portion of the Fanatics Games competition Saturday afternoon. The Washington Wizards guard wanted to tear up a jersey of New York Knicks hero Jalen Brunson at the Javits Center, just a few blocks away from where he usually antagonizes fans at Madison Square Garden…