ST LOUIS, MISSOURI - MAY 15: Matt MacPherson #83, linesman Jonny Murray #95 and referee Dan O'Rourke #9 discuss a possible hand pass game winning overtime goal scored by Erik Karlsson #65 of the San Jose Sharks against the St. Louis Blues in overtime of Game Three of the Western Conference Finals during the 2019 NHL Stanley Cup Playoffs at Enterprise Center on May 15, 2019 in St Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)