 Pavel Sidorov akaberekwa musi waAugust 8, 1976 aimbova mutambi wekushambira wekuKazakhstan, uyo aiita zvemitambo yekumhanyisa uye yekumhanyisa kumashure. Sidorov akakwikwidza kuKazakhstan mumitambo miviri yekushambira kumaOlympics ezhizha ra2000 muSydney. Akapfuura FINA B-cut ye58.69 100 m backstroke kubva kuKazakhstan Open Championships muAlmaty. Pazuva rekutanga reMitambo, Sidorov akaisa makumi maviri nerimwe kuchikwata cheKazakhstan mu4 × 100 m freestyle relay. Achibatsirana naSergey Borisenko, Andrey Kvassov, naIgor Sitnikov mumakwikwi matatu, Sidorov akahwina mutsetse wechitatu uye akarekodha kupatsanurwa kwe52.14, asi maKazakh vakagutsikana chete nenzvimbo yekupedzisira munguva yekupedzisira ye3:28.90. Zuva rakatevera racho, mumakwikwi emamita 100 achimhanya achidzokera kumashure, Sidorov akawana chinzvimbo chechishanu nechipiri mumakwikwi ekutanga mangwanani. Achishambira mumakwikwi ekutanga, akakunda Mauricio Prudencio wekuBolivia pakureba kwekupedzisira kuti atore chigaro chechina nemasekondi 0.13 munguva ye 1:01.02. 