Jill Roord scored her fourth goal of the tournament as the Netherlands marched into the quarter-finals of the Women's World Cup with victory over South Africa at the Sydney Football Stadium.Roord's header gave her side an early lead and Lineth Beerensteyn added the second goal courtesy of a goalkeeping error in the second half to secure the Dutch a date with Spain in Wellington on Friday.The 54th-ranked African champions never gave up the fight in their first appearance in the World Cup knockout stage and were always a threat on the break through their lone striker Thembi Kgatlana.Dutch goalkeeper Daphne van Domselaar was equal to everything Banyana Banyana fired at her, however, and the 2019 finalists progressed to the last eight for the second successive tournament."I'm very happy with a good win against a tough opponent," said Netherlands coach Andries Jonker. "But the part of me that wants great football is disgruntled with the first half, where we gave the ball away too much."The noon kickoff - primetime in the United States - was tailor-made for the reigning champion Americans, but they were packed off to Melbourne to face Sweden later on Sunday after the Netherlands hammered Vietnam 7-0 to win Group E.The Dutch started well, taking the lead from a corner in the ninth minute, when Danielle van de Donk headed the ball towards goal and defender Lebohang Ramalepe got in goalkeeper Kaylin Swart's way to present Roord with a simple finish.Banyana Banyana responded immediately, striker Thembi Kgatlana's fine first touch on a through ball, giving her space to unleash a shot that forced a save out of Van Domselaar.Kgatlana was a constant warning to the Dutch against complacency.She got three shots away in the 10 minutes