Speedster Seabelo Senatla scored five tries as the Blitzboks got off their Las Vegas Sevens campaign off to a winning start on Saturday.
Senatla scored twice in their opening 33-7 win over Canada.
The Blitzboks dispatched Wales 36-7 in their second game on day 1 of the Las Vegas Sevens .
The Blitzboks will face the hosts, USA, in their final game in the early hours of Sunday morning, before facing a quarter-final a few hours later.
00:30 South Africa v USA
03:31 Cup Quarter-finals
22:45 Cup semi-finals
01:55 Cup final