[1] Sidorov qualified for the men's 100 m breaststroke at the 2004 Summer Olympics in Athens, by achieving a FINA B-standard of 1:04.91 from the Russian Championships in Moscow.

[2] He challenged seven other swimmers in heat two, including three-time Olympians Jean Luc Razakarivony of Madagascar and Yevgeny Petrashov of Kyrgyzstan.

He rounded out the field to last place by more than half a second (0.50) behind Petrashov in 1:08.30.

Sidorov failed to advance into the semifinals, as he placed fifty-sixth overall out of 60 swimmers on the first day of preliminaries.

[3][4] This biographical article related to an Uzbekistani swimmer is a stub.