The Springbok Sevens will have to face an in form Fiji in the quarterfinals of the Wellington Sevens on Saturday after losing their final match against New Zealand 19-7.
Fiji displayed great sevens rugby on day one, conceding just two tries in three matches as they looked odds-on favourites for the title.
Earlier on day one Hunt scored a brace of tries as the Boks beat Niue 38-10 and Cecil Afrika was on hand for a hat-trick as they downed Wales 38-5 in their second game.
• Fiji won pool B with ease, beating Scotland 38-5, Papua New Guinea 41-0 and Australia 38-7 with the Australians finished second for a quarterfinal date with New Zealand.
In Pool C, England beat Kenya 24-10 after wins over USA and Tonga to win the Pool. England needed an injury time try to beat Tonga 24-19 in the earlier game.
In Pool D Canada scored the upset of the day, beating Argentina 26-7 in their opening game, and needed a late conversion to beat France 21-19 and qualify for the quarterfinals.
Wales v Papua New Guinea
Argentina v Tonga
USA v France
Scotland v Niue
New Zealand v Australia
Samoa v Kenya
England v Canada
Fiji v South Africa