He had his biggest season in 1987 when he became the first Norwegian ski jumper to win the overall World Cup, a feat later only matched by Espen Bredesen in 1993/94, and Anders Bardal in 2011/12.
hiː hæd hɪz bˈɪɡɪst sˈiːzən ɪn nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi sˈɛvən wɛn hiː bɪkˌeɪm ðə fˈɜːst noːɹwˈiːdʒən skˈiː dʒˈʌmpɚ tə wˈɪn ðɪ ˌoʊvɚɹˈɔːl wˈɜːld kˈʌp, ɐ fˈiːt lˈeɪɾɚɹ ˈoʊnli mˈætʃt baɪ ɛspˈɛn bɹˈɛdɛsən ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti θɹˈiː slˈæʃ nˈaɪnti fˈoːɹ, ænd ˈændɚz bˈɑːɹdəl ɪn tˈuː θˈaʊzənd ɪlˈɛvən slˈæʃ twˈɛlv.