Keisuke Nozawa (野澤 啓佑, Nozawa Keisuke; born 7 June 1991) is a Japanese athlete competing in the 400 metres hurdles. He represented his country at the 2016 Summer Olympics, reaching the semifinals. His personal best in the event is 48.62 seconds, set in Rio de Janeiro in 2016.
Source: “Keisuke Nozawa”, English Wikipedia (CC BY-SA 4.0), excerpt