Cai Zelin
Cai Zelin is a Chinese male racewalker. He finished 4th at the 20 km walk during the 2012 London Olympics, and won the silver medal at the 2016 Rio Olympics. He finished 5th at the 2015 [World Championships in Athletics|2015 World Championships] in the 20 km race walk. In 2019, he competed in the 2019 [World Athletics Championships – Men's 20 kilometres walk|men's 20 kilometres walk] at the 2019 [World Athletics Championships] held in Doha, Qatar. He did not finish his race.