# Teo Ee Yi

Teo Ee Yi (simplified Chinese: 张御宇; traditional Chinese: 張御宇; pinyin: Zhāng Yù Yǔ; Jyutping: Zoeng1 Jyu6 Jyu5; Pe̍h-ōe-jī: Tiuⁿ Gū-ú; born 4 April 1993) is a Malaysian badminton player. He won a silver medal with Ong Yew Sin at the 2023 Badminton Asia Championships and a bronze medal with Ong at the 2021 BWF World Championships. In the junior event, he captured the golds medal at the 2011 World Junior Championships in the team and boys' doubles events.

## Career

Teo won his first Grand Prix title at the 2016 Bitburger Open with his partner, Ong Yew Sin.
Teo and Ong earned a silver and a bronze medal at the 2017 and 2019 SEA Games respectively. They were also runners-up at the 2019 Malaysia Masters.
In January 2020, they were dropped from the national team by the Badminton Association of Malaysia. Following the incident, they went on to win their first World Tour title at the 2020 Thailand Masters. At the Indonesia badminton festival in Bali, they finished as semifinalists at the 2021 Indonesia Masters and the 2021 BWF World Tour Finals.
Their best achievement was winning the men's doubles silver medal at the 2023 Badminton Asia Championships after narrowly losing to Satwiksairaj Rankireddy and Chirag Shetty with score of 21–16, 17–21, 19–21 in 66 minutes. They won the men's doubles bronze medal at the 2021 BWF World Championships, where they had to go through a narrow fight against Olympic champions Lee Yang and Wang Chi-lin in the quarterfinals. Because of their achievements, they were selected to be part of the Malaysian squad in the 2022 Thomas Cup.

## Achievements
### World Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2021 | Palacio de los Deportes Carolina Marín, Huelva, Spain | Ong Yew Sin | Takuro Hoki Yugo Kobayashi | 13–21, 9–21 | Bronze |

### Asian Championships

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2023 | Sheikh Rashid Bin Hamdan Indoor Hall, Dubai, United Arab Emirates | Ong Yew Sin | Satwiksairaj Rankireddy Chirag Shetty | 21–16, 17–21, 19–21 | Silver |

### SEA Games

Men's doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2017 | Axiata Arena, Kuala Lumpur, Malaysia | Ong Yew Sin | Kittinupong Kedren Dechapol Puavaranukroh | 19–21, 22–20, 17–21 | Silver |
| 2019 | Muntinlupa Sports Complex, Metro Manila, Philippines | Ong Yew Sin | Bodin Isara Maneepong Jongjit | 12–21, 21–16, 19–21 | Bronze |

### World Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2010 | Domo del Code Jalisco, Guadalajara, Mexico | Nelson Heg | Ow Yao Han Yew Hong Kheng | 18–21, 15–21 | Silver |
| 2011 | Taoyuan Arena, Taoyuan City, Taipei, Taiwan | Nelson Heg | Huang Po-jui Lin Chia-yu | 21–17, 21–17 | Gold |

### Commonwealth Youth Games

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2011 | National Sports Centre, Douglas, Isle of Man | Nelson Heg | Ryan McCarthy Tom Wolfenden | 24–22, 21–16 | Gold |
Mixed doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2011 | National Sports Centre, Douglas, Isle of Man | Chow Mei Kuan | Srikanth Kidambi K. Maneesha | 18–21, 21–16, 21–8 | Gold |

### Asian Junior Championships

Boys' doubles
| Year | Venue | Partner | Opponent | Score | Result |
| 2010 | Stadium Juara, Kuala Lumpur, Malaysia | Nelson Heg | Choi Seung-il Kang Ji-wook | 13–21, 14–21 | Bronze |
| 2011 | Babu Banarasi Das Indoor Stadium, Lucknow, India | Nelson Heg | Huang Po-jui Lin Chia-yu | 16–21, 21–11, 17–21 | Bronze |

### BWF World Tour (1 title, 2 runners-up)

The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tour is divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300 (part of the HSBC World Tour), and the BWF Tour Super 100.
Men's doubles
| Year | Tournament | Level | Partner | Opponent | Score | Result |
| 2019 | Malaysia Masters | Super 500 | Ong Yew Sin | Marcus Fernaldi Gideon Kevin Sanjaya Sukamuljo | 15–21, 16–21 | Runner-up |
| 2020 | Thailand Masters | Super 300 | Ong Yew Sin | Huang Kaixiang Liu Cheng | 18–21, 21–17, 21–17 | Winner |
| 2022 | Australian Open | Super 300 | Ong Yew Sin | Liu Yuchen Ou Xuanyi | 16–21, 20–22 | Runner-up |

### BWF Grand Prix (1 title, 1 runner-up)

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 |
| 2016 | Bitburger Open | Ong Yew Sin | Michael Fuchs Johannes Schöttler | 21–16, 21–18 | Winner |
| 2017 | New Zealand Open | Ong Yew Sin | Chen Hung-ling Wang Chi-lin | 16–21, 18–21 | Runner-up |
    BWF Grand Prix Gold tournament
    BWF Grand Prix tournament

### BWF International Challenge/Series (6 titles)

Men's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2012 | Dutch International | Nelson Heg | Jorrit de Ruiter Dave Khodabux | 19–21, 21–13, 21–9 | Winner |
| 2012 | Malaysia International | Goh V Shem | Low Juan Shen Tan Yip Jiun | 21–15, 21–12 | Winner |
| 2013 | Finnish Open | Nelson Heg | Mohd Lutfi Zaim Abdul Khalid Tan Wee Gieen | 21–14 21–12 | Winner |
| 2016 | Portugal International | Ong Yew Sin | Đỗ Tuấn Đức Phạm Hồng Nam | 21–17, 24–22 | Winner |
| 2016 | Romanian International | Ong Yew Sin | Zvonimir Đurkinjak Zvonimir Hölbling | 21–13, 21–9 | Winner |
| 2016 | Vietnam International | Ong Yew Sin | Kenya Mitsuhashi Yuta Watanabe | 21–19, 21–14 | Winner |
    BWF International Challenge tournament
    BWF International Series tournament