Players switching from 6 to 7 is nothing new but the way Argentina are approaching their depth of talent at 8 is quite revolutionary and seemingly very effective. The problem Argentina face is that Juan Leguizamon was the best 8 in the Top 14 (France) last season and Juan Fernandez Lobbe was the best 8 in the Guinness Premiership (England). Added to this, Argentina have no world class backrowers in European clubs. Those at European clubs are not stars like these two (Galindo, Campos, Negrillo and Abadie for instance). At the World Cup Fernandez Lobbe was 7 and Leguizamon 8 until Gonzalo Longo was avaliable for the fourth match. Now Longo has retired as have fellow World Cup backrowers Ostiglia and Durand while the other (Martin Schusterman) is playing club rugby in Buenos Aires. Without question Argentina will field Fernandez Lobbe at Leguizamon in the backrow come New Zealand 2011. Its interesting that since France 2007 both have started tests at 7 and at 8. Leguizamon has the running game of the best 8's in the world but has a secondary lineout's role. Fernandez Lobbe is a great jumper and very good off the back of the scrum. He is great at the turnover and one of the best defenders of all backrowers in the world. The understanding they have of eachothers strenghts is visible every time Argentina play. Santiago Phelan has been heavily criticised since becoming Argentina's coach but what he has done with Leguizamon and Fernandez Lobbe is highly intelligent. They could very well be the best 7 / 8 combination in the World at the next World Cup. The method of using an 8 as a second fullback has long been used by Pumas teams. Longo was outstanding for years. Without him Leguizamon has taken over. In the recent games vs England he did very well here and did so wearing the 7 shirt. Fernandez Lobbe, despite wearing 8 was playing ''7'' defensively. They have a system in place to swap between 7 and 8 during the game. Different roles that look like they will work well for los Pumas. Interestingly Toulon have bought Fernandez Lobbe, who Sale played at 8, to play 7. Leguizamon is SF Paris's 8 with Parisse at 6 and Taylor at 5. This will continue with Haskell and Rabadan fighting to play 7.