Host team New Zealand, having beaten South Africa 7-5 in the final of the Cape Town tournament ahead of the Christmas break, share the lead with South Africa after being beaten by them in the Dubai final that opened the 2019-20 series.
Blitzboks coach Neil Powell said the side's start to the series was much better than last season and apart from two lineouts they fluffed in the Cape Town final they had a good tournament.
He couldn't fault the effort of his players and felt that was a result of the work they put in during a longer than usual pre-season.
South Africa's captain Siviwe Soyizwapi said it was clear from the two tournaments played so far that the margins for error in finals were tighter than ever.
That had been borne out in the Cape Town final where New Zealand took advantage of their one opportunity to score while South Africa had at least three chances but only managed to take one.
Cape Town had been a tough tournament physically, coming only a week after the Dubai opener, and South Africa were keen to claim a win at home.
"But two finals in two tournaments cannot be faulted and was just reward for the effort the squad put in," he said.
However, he said, New Zealand had deserved credit for their effort in the final, especially after they had been held scoreless in the Dubai final a week earlier.
At Hamilton, the All Blacks Sevens, who finished third in last year's tournament, are in a pool with Wales, the United States and Scotland while South Africa are drawn with Japan, England and Kenya.
The HSBC Women's Sevens will also be contested at Hamilton where New Zealand are drawn against China, England and Fiji. New Zealand's Black Ferns won both their first two tournaments in Dubai and Cape Town and will be playing at Hamilton for the first time in an HSBC World Sevens tournament.