Ireland face their biggest test to date at the World Cup tonight.
Jamison Gibson-Park returns at scrum-half for their meeting with reigning world champions the Springboks.
Kick-off at the Stade de France is at 8pm
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Before that, Pool C minnows Georgia and Portugal meet in Toulouse.
While Marcus Smith will start at full-back for England in their Pool D clash with Chile.
Argentina revived their hopes of a quarter-final place.
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They beat Samoa by 19-points to ten in a rainy Saint-Etienne.
