Mezue ahịrịokwu na-esonụ: Kalniņš ruru eru maka
100 m freestyle ụmụ nwoke, dịka onye otu ndị otu igwu mmiri Latvian, na 2012 Summer Olympics na London, site na eclipsing a FINA B-ọkọlọtọ oge nke 50.18 sekọnd si European Junior n'asọmpi. Ọ gbara ndị ọzọ na-egwu mmiri asaa na okpomọkụ nke anọ, gụnyere onye na-egwu mmiri Paraguay a mụrụ na Britain Benjamin Hockin. Kalniņš gbara ọsọ gaa n'ọkwa nke abụọ, wee daa n'okpuru ihe mgbochi 50 nke abụọ site na nkeji nke abụọ (0.25) n'azụ Kemal Arda Gürdal nke Turkey, na oge kachasị mma ya nke 49.96. Kalniņš enweghị ike ịga n'ihu na ọkara ikpeazu, ebe ọ bụ na ọ nọ n'ọnọdụ iri atọ n'ozuzu ya na nke mbụ.