Argentina 63 Namibia 3:Argentina coach Marcelo Loffreda refused to take anything for granted after a win on Saturday left the Pumas on the verge of a place in the quarter-finals.
"We've had three games, we've got good results in all three and we are top of the group," he said. "But the Ireland game is going to be very difficult and we know how they play when things get serious. So we'll have to prepare for that game really well.
"Of course we have a lot of confidence and there is a chance we can win this pool, but don't forget Ireland are a tough team and can fight back."
The nine-try bonus-point win left the Pumas firmly in control of Pool D with 14 points, and they need only earn a defensive bonus point against the Irish to guarantee top spot and avoid a quarter-final against the All Blacks.
Loffreda said he was delighted his side remains the only team in the tournament who have yet to concede a try.
"It is a real strength of the team that we work not only at being creative when we have the ball but also work when we don't have the ball," he said. "But we will have a new challenge next week and we can't afford to drop our guard for one moment especially in defence."
Captain Agustin Pichot said the emphatic win would not alter their plans for the final game against Ireland.
"We said all along that our objective was to win the four matches and that's what we want to do," said the scrumhalf.
Twins Felipe and Manuel Contepomi provided the foundations for victory. The talented brothers dominated the first half before a flurry of touch downs, including two for Juan Manuel Leguizamon, saw them run out comfortable winners.
ARGENTINA: Corleto; Senillosa, Pedro Tiesi, M Contepomi, Agulla; F Contepomi, Pichot; Roncero, Basualdo, Hasan, C Fernandez Lobbe, Albacete, Ostiglia, Martin Hernandez, Leguizamon. Replacements: Miras for Corleto (65), Todeschini for F Contepomi (61), Fernandez Miranda for Pichot (54), Scelzo for Roncero (66), Longo Elia for Leguizamon (60).
NAMIBIA: Bock; Mouton, Grobler, Powell, Africa; Schreuder, Jantjies; Redelinghuys, Meyer, Visser, Kazombiaze, Esterhuize, MacKenzie, Burger, du Plessis. Replacements: van Zyl for Bock (53), van Tonder for Schreuder (73), Lensing for Visser (40), Senekal for Kazombiaze (61), Horn for MacKenzie (47).
Referee: S Dickinson (Australia).
