He was a surprise in the Beijing 2008men's singles tournament. He beat Kaveh Mehrabi from Iran 21-16 21-12 in the first round,[1]Nguyen Tien Minh from Vietnam 21-16 15-21 21-15 in the second round and defeated Wong Choong Hann from Malaysia 14-21 21-17 21-18 in the third round. Hsieh was stopped by Chen Jin of China 8-21 14-21 in the quarter-finals. After playing the Olympic games, he took part in the Chinese Taipei Open. In the Chinese Taipei Open, he again played both singles and doubles events. He was eliminated in the third round in both events. After a few days, he played in the Japan Open Super Series. He took part in three events in Japan Open, men's singles, men's doubles and mixed doubles.
2009
Hsieh attended Badminton Proton Malaysia Open which is held in Kuala Lumpur, in January. He was knocked out in the first round in the mixed doubles; in the men's singles, he lost in the semi-finals 13–21 14–21 to South KoreanPark Sung-hwan.
In March, Hsieh attended Badminton All England Open. In this tournament, Hsieh lost to Indonesia's strongest players in the first round in both singles and doubles. Later, he played in Wilson Swiss Open. He reached the second round in mixed doubles and in quarter-final in the singles; in this tournament, he beat India's Chetan Anand in the second round 9-21 22-20 21-17, but was stopped by China's Lin Dan 16-21 14-21 in the quarter-final and ended his tournament. In early April, he went to Osaka and took part in singles and doubles to get some points to improve his world ranking.
Hsieh took part in the men's singles match only in the Singapore Open, played in June. He lost to Indonesia's Sony Dwi Kuncoro 15-21 15-21 in the second round. Then, he attended Indonesian Open in singles only. He was blown away in the second round by China's Lin Dan with 12-21 12-21. In August, Hsieh took part in the Macau Open Grand Prix Gold competition, losing in the last eight to Indonesian Taufik Hidayat 16-21 14-21.
In the Chinese Taipei Open, Hsieh lost 17-21 21-17 20-22 to Thailand's Tanongsak Saensomboonsuk. He also lost in the Li Ning China Open, 15-21 19-21 to China's Lin Dan in the second round. Then in Japan Open, he lost to Indonesian Simon Santoso 18-21 6-21 in the first round. In November, Hsieh again played singles and doubles in the Hong Kong Open Super Series. He lost to Malaysian mixed doubles pairs in the qualification match and later he lost 13-21 9-21 to Indonesian Dionysius Hayom Rumbaka in the second round.
After that, Hsieh returned to the China Open to play in only men's singles. He was beaten by Chen Jin of China in the second round by 14-21 5-21. In December, he attended BWF World Super Series Masters Competition in Johor Bahru, Malaysia. He was only beaten by former Olympic Champion Taufik Hidayat of Indonesia with a 21-17 21-15 win in the last round. The first round he lost 11-21 12-21 to the world number one Lee Chong Wei and in the second round he lost to Chinese ace Bao Chunlai 21-17 8-21 16-21.
2010
In 2010, Hsieh was very weak in many tournaments. He always lost in the first round to many country's youngster except the Macau Open Grand Prix Gold. In Macau Open, as in the prior year, he again reached the quarter-finals. He was stopped by Lee Hyun-il from Korea in Macau, the same player who defeated him in the 2008 Olympics games.
Later in November, Hsieh represented Taiwan in the 2010 Asian Games in Guangzhou. In the men's team competition round of 16, he beat India's youngster Arvind Bhat 28-26 15-21 21-13 as the Chinese Taipei beat India 3-1 win in the round of 16. The team lost to Indonesia in the quarter-final, Hsieh lost 21-11 8-21 12-21 to Indonesian ace Taufik Hidayat in the first match.
Later in the individual men's singles competition, Hsieh met the Indonesia's No.1 men's singles player Taufik Hidayat again and lost 16-21 12-21 in the first round. In December, Hsieh attended the second China Open Super Series in Shanghai. He had improved a little bit in this tournament, beating Christian Lind Thomsen from Denmark with a good result 18-21 21-3 21-16. However, he was again stopped by China's Chen Jin 8-21 21-18 16-21 and had no chance to play in the last eight.
