ˌʌndɚ hˈɛɡɪz səksˈɛsɚ mɑːɹsˈɛl kˈɑːlɚ, zwˈɪsɪɡ ɹᵻmˈeɪnd ɹˈɛɡjʊlɚ stˈɑːɹɾɚ ænd ɪnðə nˈaɪntiːnhˈʌndɹɪd nˈaɪnti nˈaɪn tˈuː θˈaʊzənd nˈæʃənɐlˌɪɡə ɐ ðeɪ wˈʌn ðə swˈɪs tʃˈæmpiənʃˌɪp.
Under Hegi's successor Marcel Koller, Zwyssig remained regular starter and in the 1999–2000 Nationalliga A they won the Swiss championship.