[6] On 3 September 2009, Kudryashov started in the motoAllegro Szlaka Piastowska, individual meeting in Poznań, Poland, finishing 15th.
He also participated in the 2010 Individual Speedway Junior World Championship in Gdańsk, Poland and qualified for the semi-final, held on 26 June in Landshut, Germany and the 2010 Individual Speedway Junior European Championship finishing 7th in the semi-final in Rawicz, Poland.
In 2011, his career really took off when he won the Team Speedway Under-21 World Championship with teammates Artem Laguta, Vitaly Belousov, Ilya Chalov and Vladimir Borodulin, which was held at his home track at the Trud Stadium in Balakovo.
[9] In early 2023, Kudriashov was forced to retire after being diagnosed with an aggressive skin cancer[10] and sold his speedway equipment in order to support his family.
[11] Later in May 2023, he underwent a leg amputation as doctors attempted to stop the spread of the cancer.