Argentina were the surprise package of the 2007 World Cup, beating hosts France for third place, but this time around they find themselves facing a must-win Pool B match against Scotland on Sunday.

For Argentina: Gonzalo Camacho has been excellent out on the wing for Argentina, offering some creativity and pace out wide and he'll be more than a handful for the Scottish defence. Loose forwards Juan Martin Fernandez Lobbe and Juan Manuel Leguizamon have been two of the stars of the tournament so far and will be crucial to the Pumas cause.

For Scotland: This marks the first major test for the Scots, who have only faced Romania and Georgia thus far. Key men John Barclay and Kelly Brown will need to hit the rucks hard and their efforts will be pivotal in securing some possession from the powerful Argentinean pack. The spotlight will also be on tighthead Geoff Cross, who fills in for Euan Murray and must be a pillar of strength at scrum time.

Head to Head: The flyhalf battle will be interesting, as Argentina welcome back playmaker Felipe Contepomi, although he'll play with the No.12 jersey don't be surprised to see him slot in at flyhalf from time to time. Scotland have preferred Ruaridh Jackson to Dan Parks because of his running game, which indicates that the Scots plan to play an attacking brand of rugby.

Recent Results:
2010: Scotland won 13-9 in Mar del Plata
2010: Scotland won 24-16 in Tucuman 
2009: Argentina won 9-6 in Murrayfield, Edinburgh
2008: Scotland won 26-14 in Velez Sarsfield, Buenos Aires 
2008: Argentina won 21-15 in Rosario
2007: Argentina won 19-13 in Stade de France, Paris
2005: Argentina won 23-19 in Murrayfield, Edinburgh

Prediction: This will be tight and is likely to be a nailbiter right to the end, but the Argentina pack should give the Pumas the edge over an unstable Scottish scrum. Argentina to win by 7 or less.

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The teams:

Argentina: 15 Martin Rodriguez, 14 Gonzalo Camacho, 13 Marcelo Bosch, 12 Felipe Contepomi (captain), 11 Horacio Agulla, 10 Santiago Fernandez, 9 Nicolas Vergallo, 8 Juan Martin Fernandez Lobbe, 7 Juan Manuel Leguizamon, 6 Julio Farias Cabello, 5 Patricio Albacete, 4 Manuel Carizza, 3 Juan Figallo, 2 Mario Ledesma, 1 Rodrigo Roncero.
Replacements: 16 Agustín Creevy, 17 Martin Scelzo, 18 Mariano Galarza, 19 Genaro Fessia, 20 Alfredo Lalanne, 21 Lucas Gonzalez Amorosino, 22 Juan Jose Imhoff.

Scotland: 15 Chris Paterson, 14 Max Evans, 13 Nick De Luca, 12 Graeme Morrison, 11 Sean Lamont, 10 Ruaridh Jackson, 9 Rory Lawson (captain), 8 Kelly Brown, 7 John Barclay, 6 Alasdair Strokosch, 5 Jim Hamilton, 4 Richie Gray, 3 Geoff Cross, 2 Ross Ford, 1 Allan Jacobsen.
Replacements: 16 Dougie Hall, 17 Alasdair Dickinson, 18 Nathan Hines, 19 Richie Vernon, 20 Mike Blair, 21 Dan Parks, 22 Simon Danielli.

Date: Sunday, September 25
Venue: Wellington Regional Stadium, Wellington
Kick-off: 20.30 (02.30 GMT)
Expected weather: Cloudy and raining all day. Max 12°C, Min 6°C.
Referee: Wayne Barnes (England) 
Assistant referees: Nigel Owens (Wales), Chris Pollock (New Zealand) 
TMO: Shaun Veldsman (South Africa)