Toulouse scrum-half Frederic Michalak suffered a knee injury during today's Top 14 clash against Stade Francais, making him doubtful for France's RBS 6 Six Nations clash against Italy next weekend.
Michalak injured himself just two minutes into the game and was stretchered off and replaced by New Zealand's Byron Kelleher.
France are the only team in the running for the Grand Slam and will play Italy on 14 March 14 and England on 20 March.
