South Africa Sevens head coach Paul Treu paid tribute to the home crowd at the Cell C Nelson Mandela Bay South Africa Sevens after his side went unbeaten on day one.
The hosts beat last week's Cup winners Samoa, as well as France and Australia to reach the Cup quarter finals of the third round of the HSBC Sevens World Series and will face USA on day two.
"We can be happy with our results on day one," said Treu.
"A week ago we started well, but we are progressing as a team. To come out here and give a performance like this on day one is just testament to the boys. Now we can hopefully take the momentum into day two as well.
"The home crowd is helping, and the boys are getting a lot of energy from the crowd. We can see so many people coming out to support the team and this our one opportunity to play in front of a home crowd, so we would like to give them something to remember it by."
Video : Day one highlights from PE
Portugal were the only other side one to win all three of their matches on day, and their head coach Frederico Sousa acknowledged the hard work of his players.
His side lost all five matches in the first round in Australia but have now reached two successive Cup quarter finals.
"After Australia, where we struggled, we went home, looked at ourselves and tried to work hard to try and make it harder for other teams," added Sousa.
"So the result of the hard work of the boys is us getting through and they can be very pleased with their efforts."
MORE REACTION FROM DAY ONE
Rhys Shellard, Wales captain: "First game was tricky, Spain are a good team so we were lucky to win that won. Argentina game was poor for our standards, but then we came out and showed what we could do against a very good Kenya team."
Alex Magleby, USA coach, after victory against Canada: "It was nice [to record a victory against Canada] they are a good rival of ours. We know them very well but was nice to get a W."
Phil Greening, Scotland coach, after victory against Fiji: "The boys done really well this morning against New Zealand. We spoke about the group, yes it was tough, but we said we wanted to make a mark and we have now done that. But it means nothing if we don't deliver against England."
Frankie Horne, SA Sevens captain, after victory against Samoa: "It is just a mindset change. We lost to Samoa last week by three points, they went on to win the tournament, so just a mindset change, working on all our niggles this week and it worked for us today.
"The crowd is amazing but you can't get too hyped up by the crowd. But we are sapping energy from them and it works for some of the guys. He [Cecil Afrika] is just phenomenal. He reads the game like he was born on the Sevens pitch. He has a presence on the field to other teams."