Ku qor sii wadida faqradan - Ciyaaraha Olombikada Xagaaga ee 2000 ee Sydney, Kalmikovs wuxuu go'aansaday inuu ka tago kala badh labadiisa lab, oo uu ku tijaabiyo halkii uu ka qaadan lahaa 100 m breaststroke. Wuxuu gaadhay heerarka FINA B ee 1:04.89 (100 m breaststroke), 2:16.30 (200 m breaststroke), iyo 2:04.83 (200 m shakhsi ahaaneed isku dhafan) oo ka socda Horyaalka Yurub
waxaa lagu qabtay Helsinki. Maalintii ugu horreysay ee Ciyaaraha, Kalmikovs wuxuu kaalinta 34aad ka galay orodka 100 m ee laabta. Isagoo dabaalanaya heerkulka afraad, wuxuu ku raaxeystay dhammaystirkii orodka ee Puerto Rico ee Arsenio López, maadaama ay labaduba ku dhufteen darbiga marka hore waqti isku mid ah 1:04.02. Saddex maalmood ka dib, orodka 200 m ee laabta, Kalmikovs wuxuu aasaasay rikoor cusub oo Latvian ah oo ah 2:16.21 si uu uga soo saaro dadaalkii sagaal iyo tobnaad ee heerkulka, laakiin wuxuu ka maqnaa kala-goynta semi-finalka in ka badan nus ilbiriqsi (0.50). Dhacdadii ugu dambeysay, 200 m shakhsi ahaaneed, Kalmikovs wuxuu galay afar iyo labaatanka subaxnimo. Mar kale ayuu dabaasha ka galay wareegga afraad, wuxuuna ku soo dhamaaday kaalinta labaad 0.11 ilbiriqsi oo ka dambeysa Dean Kent oo reer New Zealand ah oo leh waqtigii ugu fiicnaa ee 2:04.18.