|Born||23 January 1994|
|Height||1.89 m (6 ft 2 in)|
|Men's & mixed doubles|
|Highest ranking||16 (MD 19 April 2019)|
24 (XD 13 August 2019)
|Current ranking||28 (MD), 24 (XD) (13 August 2019)|
Ou made his debut in the international tournament by competing at the 2013 China Masters. In 2017, he clinched his first international title by winning the mixed doubles title at the Indonesia International Series tournament partnered with Liu Lin.
Ou started the 2018 season by competed at the Lingshui China Masters, and finished as the semifinalist in the mixed doubles event partnered with Chen Lu. He then won the men's doubles title at the U.S. Open teamed-up with Ren Xiangyu, also the runner-up at the Singapore Open. Together with Feng Xueying, he won the mixed doubles title at the Syed Modi International a Super 300 BWF tournament.
BWF World Tour
The BWF World Tour, announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments, sanctioned by Badminton World Federation (BWF). The BWF World Tour are divided into six levels, namely World Tour Finals, Super 1000, Super 750, Super 500, Super 300 (part of the HSBC World Tour), and the BWF Tour Super 100.
|2019||Akita Masters||Super 100||Zhang Nan|| Akira Koga
|2019||Lingshui China Masters||Super 100||Ren Xiangyu|| Lee Jhe-huei
|2018||Singapore Open||Super 500||Ren Xiangyu|| Mohammad Ahsan
|2018||U.S. Open||Super 300||Ren Xiangyu|| Kang Min-hyuk
|16–21, 21–16, 21–17||Winner|
|2018||Syed Modi International||Super 300||Feng Xueying|| Rinov Rivaldy
Pitha Haningtyas Mentari
BWF International Challenge/Series
|2019||Belarus International||Zhang Nan|| Matthew Clare
|2017||Indonesia International||Liu Lin|| Lukhi Apri Nugroho
- BWF International Challenge tournament
- BWF International Series tournament
- BWF Future Series tournament
- "欧烜屹 Ou Xuan Yi" (in Chinese). Badmintoncn.com. Retrieved 14 January 2019.
- "Players: Ou Xuanyi". Badminton World Federation. Retrieved 14 January 2019.
- "2013中国羽毛球大师赛比赛赛程，直播时间表" (in Chinese). Sina. 23 August 2016. Retrieved 14 January 2019.
- "Indonesia and Malaysia win titles each in Surabaya". Badminton Asia. 16 May 2017. Retrieved 14 January 2019.
- "2018中国（陵水）国际羽毛球大师赛 小将陆光祖逆转队友孙飞翔晋级决赛" (in Chinese). HNDnews.com. 14 April 2018. Retrieved 14 January 2019.
- "漳州双星闪耀双打赛场" (in Chinese). 厦门第一门户网站. 3 December 2018. Retrieved 14 January 2019.
- "BWF Launches New Events Structure". Badminton World Federation. 29 November 2017.
- "Action-Packed Season Ahead!". Badminton World Federation. 15 January 2018.