Olympic Games Xu competed for China at the
2012 Summer Olympics, and won a silver medal in the
100 metre backstroke at the
2016 Summer Olympics. He also won a silver medal in the 4x100 mixed medley at the
2020 Summer Olympics and another silver medal in the
100 metre backstroke at the
2024 Summer Olympics. He won his first gold medal in the
4 × 100 metre medley relay at the
2024 Summer Olympics. Xu is the current national record holder in backstroke races in all distances (50, 100, and 200 metres). He held the world record in the 100 m backstroke short course from 2018 to 2020.
International Competitions |right At the
2014 Asian Games, Xu,
Ning Zetao,
Li Zhuhao and
Li Xiang teamed up to win the men's 4 × 100 metre medley relay. Individually, Xu received silver medals in the 100m backstroke and 200m backstroke. While also receiving a bronze medal in the 50m backstroke. At the
2016 short course World Championships, Xu won the bronze medal in the
100 metre backstroke. At the
2017 World Aquatics Championships, Xu became the first male Chinese swimmer to win gold in the 100m backstroke in a time of 52.44 seconds. He also received the bronze medal as a part of the mixed medley relay. At the
2018 Asian Games, Xu received six gold medals. He swept the backstroke events and was part of the Asian record setting mixed and men medley relays. At the
2019 World Aquatics Championships, Xu successfully defended his 100m backstroke title with a time of 52.43 seconds. Xu also placed sixth in the 50m backstroke. ==Career best times==