see more

PITTSBURGH, PA - OCTOBER 20: Head coach Mike Sullivan of the Pittsburgh Penguins gets an explanation from referee Kevin Pollock #33 after a goal was waved off in second period during the game against San Jose Sharks at PPG PAINTS Arena on October 20, 2016 in Pittsburgh, Pennsylvania. (Photo by Justin Berl/Getty Images)

PITTSBURGH, PA - OCTOBER 20:  Head coach Mike Sullivan of the Pittsburgh Penguins gets an explanation from referee Kevin Pollock #33 after a goal was waved off in second period during the game against San Jose Sharks at PPG PAINTS Arena on October 20, 2016 in Pittsburgh, Pennsylvania. (Photo by Justin Berl/Getty Images)