France's two first-choice outhalves Frederic Michalak and Julien Peyrelongue could miss next year's Six Nations championship through injuries suffered last weekend in European Cup matches.

Michalak limped off with an ankle injury in the 10th minute of Stade Toulouse's 25-12 win over Northampton on Saturday while Peyrelongue was replaced half an hour into Biarritz's 48-17 victory at Calvisano because of a knee injury. Both players had scans on Monday.

Biarritz said yesterday that Peyrelongue had damaged right knee ligaments and would be sidelined for at least two months.

According to Toulouse, Michalak could be out for up to eight weeks.