Sung-Wei Tseng (Chinese: 增菘瑋)(born December 28, 1984 in Taitung County, Republic of China (Taiwan), is a Taiwanese professional baseball player.A pitcher, he plays minor league baseball in the United States for the Cleveland Indians organization. In 2008, he played for the Akron Aeros and Kinston Indians.Tseng also plays for the Chinese Taipei baseball team in the 2009 World Baseball Classic.