South Africa shocked New Zealand 14-7 on Thursday to earn an Olympic rugby sevens semi-final against France, while double-defending champions Fiji edged Ireland and will meet Australia in Saturday's medal matches.

South Africa, who qualified for the Games by winning the final repechage slot last month, went ahead with a try by Selwyn Davies, who then delivered a great kick and chase which he scooped up to gift Tristan Leyds a second try, both converted by Leyds.

Tokyo silver medallists New Zealand closed the gap to 14-7 at halftime through Moses Leo and then hammered at the door throughout the second half but were kept at bay by some incredible South African defence.

Meanwhile, Fiji extended their proud record of winning every match they have played at the Olympics since sevens was introduced in 2016 but they were pushed all the way by a remarkable Irish side who are relative newcomers to the format.

Iosefo Baleiwairiki claimed the first Fiji try after 30 seconds but Ireland led 10-7 at halftime after two well-finished tries by Chay Mullins. (Reuters)