Dee ihe na-aga n'ihu maka paragraf a - Nerhagen bidoro n'ọkwa World Championship na World Championship na Antholz-Anterselva na 1983. Ọ sonyekwara n'asọmpi Iko Mbaụwa n'afọ 1985
, 1986 na 1987 maka Norway. Onye kachasị mma ya na World Championships bịara na 1985 na Ruhpolding ebe Nerhagen kwụsịrị 15th na 20 km onye. Ọkacha mma ya na-emecha na World Championships bụ ọla nchara nke bịara na nke mbụ ya na 1983, nke ga-abụkwa naanị ihe nrite ya na World Championships.