Ice Hockey player Wayne Gretzky (L) signs autographs for young ice hockey players in Sydney, Australia, June 23, 2016. Wayne Gretzky, the 55-year-old Canadian hockey legend, is in Australia to promote winter sport games. He will attend an exhibition game before the USA and Canada clash on Saturday. (Xinhua/Zhu Hongye)

Ice Hockey player Wayne Gretzky poses for a photo holding his jersey in Sydney, Australia, June 23, 2016. Wayne Gretzky, the 55-year-old Canadian hockey legend, is in Australia to promote winter sport games. He will attend an exhibition game before the USA and Canada clash on Saturday. (Xinhua/Zhu Hongye)