BUENOS AIRES (Reuters) – South Africa can recover from last weekend’s shock defeat by Argentina in Durban by going on to win the World Cup, captain Victor Matfield said on Friday. South Africa’s Victor Matfield wins the line out against Ireland during their international test match at the Aviva Stadium in Dublin November 8, 2014. REUTERS/Cathal McNaughton The experienced lock, who will lead the side against the Pumas on Saturday in their last test before the Sept. 18-Oct. 31 tournament, told Reuters the Springboks were raring to get on the field at Velez Sarsfield to make amends. “We believe we can win (the World Cup) but our confidence is a bit down at the moment, the guys just want to change things around this week,” Matfield said in an interview at the team’s hotel in Buenos Aires. “They want to get a good performance under their belts before they go to the World Cup so this is a very important game for us. “We just want to go out there and execute our plan, be accurate in what we want to do and hopefully get a result as well,” added Matfield. Argentina beat South Africa for the first time last…