As one of the rare mobile players taller than 2 metres in Taiwan, Tseng has also served as starting centre for the Chinese Taipei national basketball team since his national team debut at the FIBA Asia Championship 2001.[2] At the FIBA Asia Championship 2009, Tseng helped Chinese Taipei to a fifth-place finish while averaging 10.4 points and 4.7 rebounds per game.[2] The fifth-place finish was Chinese Taipei's best finish in the tournament since the turn of the century.