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. 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. The fifth-place finish was Chinese Taipei's best finish in the tournament since the turn of the century.
