Nyorai kuenderera mberi kweiyi ndima - Nerhagen akatanga pamutambo weWorld Championship pamakwikwi eWorld Championship muAntholz-Anterselva muna 1983. Akatorawo rutivi muWorld Championships muna 1985
, 1986 uye 1987 nokuda kweNorway. Kuguma kwake kwakanakisisa pamunhu mumwe nomumwe paWorld Championships kwakauya muna 1985 muRuhpolding apo Nerhagen akapedza 15th mumunhu mumwe nomumwe we20 km. Kupedza kwake kwakanakisisa muWorld Championships kwakanga kuri bronze iyo yakauya pakutanga kwake muna 1983, iyo yaizovawo menduru yake chete paWorld Championships.