He competed in the Men's 200-meter breaststroke event at the 2016 Summer Olympics and both the Men's 100-meter (swimming a 1:00.23, setting a Kyrgyz national record) and 200-meter breaststroke events at the 2021 Summer Olympics.

[2] His father is former three-time Olympian and former breaststroke national record holder Yevgeny Petrashov.

[3][4] He competed in the Men's 200-meter breaststroke event at the 2016 Summer Olympics and both the Men's 100-meter (swimming a 1:00.23, setting a Kyrgyzstani national record) and 200-meter breaststroke events at the 2021 Summer Olympics.

[5][6] Petrashov won the gold medal in the 200-meter breaststroke at the 10th Asian Age Group Swimming Championships 2019 in Bangalore, India.

[2] He did not score at the 2022 NCAAs, after losing a swim-off for 16th in the 100, and not matching his ACC 200 breast time.