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Gregory Persinger (2nd R) of the United States competes during the men's match at the International Curling Elite 2019 against Sweden in Xining, capital of northwest China's Qinghai Province, Dec. 8, 2019. (Xinhua/Zhang Long)

Gregory Persinger (2nd R) of the United States competes during the men's match at the International Curling Elite 2019 against Sweden in Xining, capital of northwest China's Qinghai Province, Dec. 8, 2019. (Xinhua/Zhang Long)