Anaheim Ducks' Jakob Silfverberg (L) vies with Chicago Blackhawks' Erik Gustafsson during a 2017-2018 NHL hockey game between Anaheim Ducks and Chicago Blackhawks in Anaheim, California, the United States, on March 4, 2018. Anaheim Ducks won 6-3. (Xinhua/Zhao Hanrong)