the interval Sexton gave Ireland a lead they never relinquished with his trusty boot . Ronan O'Gara came off the bench to kick to further penalties , taking his Irish points tally to a record 1,039 and they almost added a late try as winger Tommy Bowe was pulled up by O'Connor five meters from the try-line . Meanwhile , South Africa made it two wins out of two in the defense of the title with a commanding 49-3 victory over Fiji on Saturday . After their narrow 17-6 win over Wales in their Pool D opener , the Springboks were far sharper and scored tries through center Jaque Fourie , Gurthro Steenkamp , Frans Steyn , Morne Steyn , Tendai Mtawarira and Danie Rossouw . Morne Steyn kicked 16 points with a Frans Steyn penalty the other score . Seremia Bai scored a sole penalty for Fiji , who beat Namibia 49-25 in their opener , but were outclassed here . In the other World Cup match played Saturday , Argentina scored their first win , after a narrow opening defeat to England , with a 43-8 victory over Romania in Pool B , running in six tries .
-LRB- CNN -RRB- -- Ireland upset the Australian Wallabies 15-6 at Eden Park Saturday to top Pool C of the Rugby World Cup . It was Ireland 's first win over Australia in five attempts at the global showpiece and puts them securely on the path to the quarterfinals after two victories from two matches . Inspired defense in wet conditions frustrated their more fancied opponents , who trail them by three points with two games to play . `` We were mentally in a place where we felt we owed ourselves a big performance as much as we owed the Irish public one , '' Ireland captain Brian O'Driscoll told AFP . `` The Irish played more intelligently , they put us under a lot of pressure and profited from that , particularly in our end of the ground , '' Wallabies ' coach Robbie Deans said . Australia were ahead early through a James O'Connor penalty in the 11th minute , but Jonathan Sexton 's leveled for the Irish with a penalty of their own before putting them 6-3 ahead with a drop goal . O'Connor put Australia back on level terms before the break , but after