But receiving from the kick-off, New Zealand took the game to South Africa. They countered South Africa's physical forwards and opened the scoring with just over three minutes on the clock. Ben Lam used his power to break through the midfield and DJ Forbes provided close support to send Sherwin Stowers under the posts.
New Zealand were shown more yellow cards than any other teams on day one of the competition and Bryce Heem was sent to the sin bin shortly after the opening score.
The Kiwis slowed the game down to almost walking pace as their experienced group tried to run down Heem's two-minute cool down period. The tactics almost paid off but, with just seconds remaining in the first half, Seabelo Senatla found his way through to level the scores.
This was a fitting finale, contested by the two best teams on the World Series circuit. Early pool encounters with the likes of Barbados and the Cook Islands offered little for the rugby purists, but this was of the highest draw.
Senatla struck again shortly after the break. South Africa threw the ball wide and, for the first time over the whole weekend, New Zealand found themselves in a losing position. New Zealand were exposed for pace and Cecil Afrika found a hole to add a quick-fire third to leave the Kiwis with a mountain to climb.
But there was hope when Declan O'Donnell made a break down the right wing, finding Joe Webber on his inside shoulder to pull the deficit back to just five points. There was one last throw of the dice but, with the clock down to zero, Akira Ioane knocked the ball on and dreams of a fifth consecutive gold went up in smoke.
"That's finals footy. Pressure builds and causes players to make the wrong decisions at crucial times and that was all of us from 1-12. It's disappointing," captain Forbes told Sky Sport.
Perhaps looking towards the Rio Olympic Games when sevens will make its debut, Forbes was focusing on the positives following the defeat.
"The only positive is that Tietj said before 'form is temporary but class lasts forever'. We're a classy side, no doubt and that. But maybe 10 or 11 minutes of that 20-minute final we were a bit off that pace. Good on South Africa, they played really well."