# Tsai Chia-hsin

Tsai Chia-hsin (Chinese: 蔡佳欣; pinyin: Cài Jiāxīn; Wade–Giles: Ts'ai Chia-hsin; born 25 July 1982) is a Taiwanese former badminton player. He competed at the 2006 and 2014 Asian Games. Tsai also competed (for the Republic of China as Chinese Taipei) in the 2004 Summer Olympics in mixed doubles with partner Cheng Wen-hsing and in 2016 Summer Olympics in men's doubles with partner Lee Sheng-mu. In 2004, they defeated Chris Dednam and Antoinette Uys of South Africa in the first round but lost to Zhang Jun and Gao Ling of China in the round of 16.

## Achievements
### Asian Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2007 | Stadium Bandaraya, Johor Bahru, Malaysia | Hu Chung-hsien | Koo Kien Keat Tan Boon Heong | 21–18, 16–21, 10–21 | Bronze |

### East Asian Games

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2009 | Queen Elizabeth Stadium, Hong Kong | Hu Chung-hsien | Chen Hung-ling Lin Yu-lang | 21–17, 22–20 | Gold |
| 2013 | Binhai New Area Dagang Gymnasium, Tianjin, China | Lee Sheng-mu | Chen Hung-ling Lu Chia-pin | 21–8, 21–18 | Gold |

### Summer Universiade

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2007 | Thammasat University, Pathum Thani, hailand | Hsieh Yu-hsing | Sudket Prapakamol Phattapol Ngensrisuk | 21–17, 17–21, 14–21 | Silver |

### Asian Junior Championships

Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2000 | Nishiyama Park Gymnasium, Kyoto, Japan | Cheng Wen-hsing | Zheng Bo Wei Yili | 3–15, 5–15 | Bronze |

### BWF Superseries

The BWF Superseries, which was launched on 14 December 2006 and implemented in 2007, was a series of elite badminton tournaments, sanctioned by the Badminton World Federation (BWF). BWF Superseries levels were Superseries and Superseries Premier. A season of Superseries consisted of twelve tournaments around the world that had been introduced since 2011. Successful players were invited to the Superseries Finals, which were held at the end of each year.
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2014 | Singapore Open | Lee Sheng-mu | Cai Yun Lu Kai | 19–21, 14–21 | Runner-up |
| 2014 | Australian Open | Lee Sheng-mu | Lee Yong-dae Yoo Yeon-seong | 14–21, 18–21 | Runner-up |
    BWF Superseries Finals tournament
    BWF Superseries Premier tournament
    BWF Superseries tournament

### BWF Grand Prix

The BWF Grand Prix had two levels, the Grand Prix and Grand Prix Gold. It was a series of badminton tournaments sanctioned by the Badminton World Federation (BWF) and played between 2007 and 2017.
Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2012 | Macau Open | Lee Sheng-mu | Vladimir Ivanov Ivan Sozonov | 14–21, 21–17, 21–16 | Winner |
| 2013 | Chinese Taipei Open | Lee Sheng-mu | Kim Gi-jung Kim Sa-rang | 11–21, 11–21 | Runner-up |
| 2013 | Macau Open | Lee Sheng-mu | Hoon Thien How Tan Wee Kiong | 16–21, 19–21 | Runner-up |
| 2016 | Swiss Open | Lee Sheng-mu | Kim Astrup Anders Skaarup Rasmussen | 8–21, 15–21 | Runner-up |
    BWF Grand Prix Gold tournament
    BWF Grand Prix tournament

### BWF International Challenge/Series

Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2010 | Kaohsiung International | Liao Chao-hsiang | Bodin Isara Maneepong Jongjit | 18–21, 19–21 | Runner-up |
    BWF International Challenge tournament
    BWF International Series tournament