Biarritz scrum-half Dimitri Yachvili will miss Saturday's Heineken Cup clash with Saracens due to a thigh injury.
The France veteran underwent scans on Monday after a thigh injury he sustained during the World Cup flared up again.
"He complained of pain at half-time and during the second half. Every time he kicked he felt like he was punched in the leg," said Biarritz coach Patrice Lagisquet.
Yachvili will be sidelined for two weeks, meaning that he will also miss Biarritz's Top 14 clash with Racing-Metro next week.