After Jonathan Sexton’s penalty put Ireland ahead 10-8 an hour in, his replacement Jack Crowley slotted a 77th-minute penalty to leave South Africa needing a try to draw and a converted score to win.
The Springboks earned a lineout 10 meters from the Irish line but the maul was smothered and the couldn’t recycle the ball quickly enough before the play was whistled and the game was over.
Ireland beat the defending champions for the second time in 10 months and for the first time at the Rugby World Cup.
The second heavyweight clash of the tournament followed France’s opening-night 27-13 win against the All Blacks, and had a crackling aura of expectation about it.
Roared on by a huge contingent of fans at the 80,000-capacity Stade de France, the Irish showed their intent by taking an attacking lineout from the first penalty. They lost the throw and then had to defend ferociously on South Africa’s foray forward, which ended with an infringement in the ruck giving Libbok a penalty for 3-0. That was the only kick he made.
Ireland notched a third straight win against the Springboks, while the Northern Hemisphere big guns made it 2-0 against the Southern Hemisphere so far at the Rugby World Cup.