Mikhail Biryukov (tennis)

Mikhail Sergeyevich Biryukov (; 28 April 1992 – 4 October 2019) was a Russian junior tennis player. His highest ATP singles ranking was 292. After his retirement from professional tennis at age 22, he served as a coach of under 16 player Alexey Zakharov.
Tennis career.
On 21 August 2010, Mikhail, representing Russia, won the doubles silver medal in the inaugural Youth Olympic Games held in Singapore with Victor Baluda. Mikhail and Victor were defeated by the Briton Oliver Golding and by the Czech Jiri Vesely 6–3, 6–1.
Personal and death.
Biryukov was the son of four-time World Champion in modern pentathlon, Irina Kiseleva. On 4 October 2019, Biryukov was found dead in Moscow. He died by suicide.