ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti wˈʌn, ðə fˈɔːɹmæt ʌvðə kˌɑːmpətˈɪʃən wʌz tʃˈeɪndʒd ˌɪntʊ ɐ pɹəfˈɛʃənəl kˌɑːmpətˈɪʃən wɪð ɐ sˈɪŋɡəl wˈɪnɚ, fɔːɹ wˈʌn pɚtˈɪkjʊlɚ dˈɪsɪplˌɪn.
In 1961, the format of the competition was changed into a professional competition with a single winner, for one particular discipline.