Kammala wannan jumla: A 1934 ya zama na karshe mai riƙe da rikodin duniya na decathlon a karkashin hanyar 1915 na zira kwallaye, tare da maki 8790.46, kuma ya lashe lambar zinare a gasar
Gasar Zakarun Turai ta 1934. A zamanin Nazi a Jamus, Sievert an gan shi a matsayin alama ce ta fatan "tseren mashahuri" na Jamus a Wasannin Olympics na 1936. Duk da haka, ya ji rauni a lokacin wasannin kuma an lashe lambar zinare ta Amurka Glenn Morris, wanda kuma ya doke rikodin Sievert. An ba Sievert shawarar barin wasan bayan raunin da ya samu.