Earlier in the day, the Blitzboks beat Zimbabwe 31-0 and Samoa 19-12, but coach Neil Powell was not happy that they could not sustain their effort in the latter stages if their match against Argentina.
The Blitzboks surged ahead 12-0 before the Argentineans came back in the second half, scoring the match-winning try at the death after Siviwe Soyizwapi was sin-binned for a high tackle, following an earlier indiscretion by Impi Visser.
“We played six great minutes of rugby against Argentina, but then our discipline let us down – the two yellow cards were costly and it is something we need to improve on come Saturday,” said Powell.
“It was a good day in that we have a lot of positives to take out of the three matches, but those mistakes made will keep us honest on the second day. We need to show up with the right attitude in the morning.”
The Blitzboks opened the defence of their Emirates Airline Dubai Sevens title in strong fashion against Zimbabwe. It took a while to get into their stride against their African neighbours in the opening match, but a number of deft touches by Justin Geduld soon had the Zimbabwean defences broken.
Soyizwapi, Branco du Preez and Kyle Brown scored tries off his kicks, while Rosko Specman also scored a brace. Du Preez (2) and Geduld added conversions.Against Samoa, it took the Blitzboks six minutes to get their first try as they struggled against a rugged and physical defence. Soyizwapi scored first and Du Preez's conversion made it 7-0. Samoa scored from the restart though and scores were tied at the break.
The second half saw Werner Kok extending the lead to seven points again, but a Samoan intercept try closed the lead to 14-12. But a late try by Muller du Plessis sealed the win.
Justin Geduld took a hard knock in the match and was ruled out of the tournament afterwards. He was replaced by Selvyn Davids.
The Cup quarter-finals are (SA time):
09h00: South Africa v England
09h22: New Zealand v Scotland
09h44: Australia v Argentina
10h06: Fiji v USA
The SA Rugby Sevens Academy will also face their England counterparts in the Cup quarter-finals of the Emirates Airline Dubai Sevens International Invitational tournament. The South Africans started with wins overs Samurai (10-5) and Kuban RFC (26-0), but then came up short against Germany 19-14.