Nyman Fredrik Emanuel of Sweden competes during the men's match at the International Curling Elite 2019 between Sweden and South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019. (Photos: Xinhua)

Andrin Schnider of Switzerland competes during the men's match at the International Curling Elite 2019 between Switzerland and the United States in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Lee Kibok (R) of South Korea competes during the men's match at the International Curling Elite 2019 between Sweden and South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Kim Changmin (L) of South Korea competes during the men's match at the International Curling Elite 2019 between Sweden and South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Kim Changmin of South Korea competes during the men's match at the International Curling Elite 2019 between Sweden and South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Nyman Fredrik Emanuel of Sweden competes during the men's match at the International Curling Elite 2019 between Sweden and South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Fredrik Carlsen of Sweden competes during the men's match at the International Curling Elite 2019 between Sweden and South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Stoll Nicola Michel (C) of Switzerland competes during the men's match at the International Curling Elite 2019 between Switzerland and the United States in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Oliver Widmer of Switzerland competes during the men's match at the International Curling Elite 2019 between Switzerland and the United States in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Colin Hufman of the United States competes during the men's match at the International Curling Elite 2019 between Switzerland and the United States in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Colin Hufman (L) and Philip Tilker of the United States compete during the men's match at the International Curling Elite 2019 between Switzerland and the United States in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.

Colin Hufman of the United States reacts during the men's match at the International Curling Elite 2019 between Switzerland and the United States in Xining, capital of northwest China's Qinghai Province, Dec. 9, 2019.