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The 23-year-olds were named in the starting line up for Biarritz' biggest game of the year and each played their part in the victory that secured Heineken Cup qualification for next season.
And now they could be enjoying a double celebration after being invited to a series of physical tests by France coach Philippe Saint André as he looks ahead to the forthcoming two-test tour of Argentina.
Saint Andre has selected a squad of 27 players for a camp in Marcoussis on May 29 and 30 and has since spoken of his desire to lower the average age of the French side prior to next season's RBS 6 Nations.
The likes of Biarritz veterans Imanol Harinordoquy and Dimitri Yachvili haven't been included as the camp has been specifically designed to test young players Saint Andre doesn't know very well or to assess those who have struggled with fitness or suspension this season.
Players from Toulouse, ASM Clermont Auvergne, Toulon, Castres, Montpellier and Racing Metro weren't considered for the camp due to their play-off commitments in the Top 14 but the three-day session still givesGuyot, Lauret and Watremez a great chance to push their claims for international recognition.
Guyot has been one of the mainstays of the Biarritz back row this season, featuring in 34 games in all competitions. He played in every single one of his side's nine European fixtures, starting five Heineken Cup games and all three Amlin ties and coming off the bench once in the Heineken.
Fellow flanker Lauret played in six games during the continental campaign and a further 18 in the Top 14, while prop forward Watremez tallied one more in Europe and one less in the French Championship.
They have been joined in the squad by Biarritz team-mate Raphael Lakafia, another 23-year-old back rower who played in two Heineken Cup games and the Amlin Challenge Cup quarter-final and semi-final before missing out against Toulon at the weekend.
Saint Andre will name his final tour squad on May 31.
Players invited to national testing camp: Huget, O'Connor (Bayonne), Guyot, Lakafia, Lauret, Watremez (Biarritz), Lopez (Bordeaux Begles), Dubarry (Brive), L Dupont (Grenoble), Guillamon (Lyon), Attoub, Dupuy, Flanquart, Papé, Plisson, Slimani, Szarzewski (Stade français), Dulin, Machenaud (Agen), Chouly, Cazenave, Guirado, Mermoz, Michel, Planté, Taofifenua (Perpignan), Synaeghel (Dax)
France tour schedule
Argentina v France, Cordoba, June 16
Argentina v France, Tucuman, June 23
