[1] Sidorov narrowly missed making the final of the shot put at the 2012 IAAF World Indoor Championships, finishing seventh in his qualifying group, and 14th overall with a mark of 19.88 m.[2] Sidorov took his first senior international championship medal, when he threw 20.55m for bronze at the 2011 European Indoor Championships in Paris.

He threw 21.45m on 22 July to win the Russian National Championships.

[3] In doing so, he overtook David Storl and Aleksandr Lobynya as the best European outdoor shot putter and best Russian outdoor shot putter respectively in 2011.

[5] In 2017, he tested for a positive for a banned substance Indapamide and was disqualified for a year starting in July 2017.

This biographical article relating to Russian athletics is a stub.