Ireland 2-0 South Africa

Ireland made a dream start to life at the Olympics as they got the best of South Africa scoreline in their debut on this stage at the Oi Stadium.

Róisín Upton’s powerful low drag-flick in the ninth minute meant Ireland held the lead almost from the outset, an advantage they eventually strengthened before the end of the third quarter via Sarah Torrans.

"You could see the smiles when we walked out," Torrans said after the win, scoring in what was her first senior ranking tournament game.

"It was just fun; it was a long day waiting to get out on the pitch and it still feels so surreal. To do it with this group of girls is incredible. It is just a pity we can’t do it with family and friends but hopefully we are doing them proud.

"It is nice to get on the score sheet in the first game. It is what an attacker dreams of and hopefully we can bring that into the next few games.

"Netherlands next, the best in the world. It’s always a fun game but we will come out fighting."

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Ireland got off to a fast start with Torrans and Nicci Daly storming down the right flank. Deirdre Duke's trickery duly earned the first penalty corner of the match which Upton duly whipped into the left corner past the stick of Phumelela Mbande.

After that, it was a case of when rather than if Ireland would score again as they held the vast majority of the play against South Africa, the lowest ranked side in the tournament at number 16.

Three more corner chances came and went in the first half while Naomi Carroll pinged the post with a rasping shot from close range.

The African champions showed their threat in fits and starts with Nomnikelo Veto the danger woman.

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But it was the Green Army who always looked the more likely to push on. Torrans missed out from a great chance created by Katie Mullan’s driving run and diagonal ball into the danger zone. Anna O’Flanagan also stung the pads of the goalkeeper and Sarah Hawkshaw chipped one over.

The insurance goal eventually arrived in the 44th minute when Loreto team mates Hannah Matthews and Torrans connected. The former provided the pace on the ball into the circle, which saw the ball deflected high in the air and Torrans instinctively batted down and into the net.

After that, there were further corner chances which went incomplete but goalkeeper Ayeisha McFerran never looked unduly troubled in a composed defensive outing. Matthews was denied a third by Mbande’s brilliant diving stop but Ireland content to win 2-0.

Ireland next meet the Netherlands on Monday morning (2am Irish time). The Dutch eased to a 5-1 win over India with four second-half goals.

Ireland: A McFerran, C Watkins, S Torrans, R Upton, H McLoughlin, D Duke, K Mullan, S Hawkshaw, L Tice, S McAuley, A O’Flanagan.

Subs: H Matthews, N Daly, S McCay, N Carroll, L Holden.

South Africa: P Mbande, C Seerane, N Walraven, K Paton, R Johnson, O Zulu, L-M Deetlefs, E Hunter, L du Plessis, Q Bobbs, T Glasby.

Subs: E Molikoe, T Mallett, N Veto, C Maddocks, L Mahole.

Umpires: E Yamada (JPN), K Hudson (NZL).