Castres Olympique paid a huge price for the win in French Championship Top 16 against Bordeaux-Bà¨gles in the last day of pool stages with a serious injury to a key player.
Thierry Lacroix, 36 years old, their outside-half had to leave the pitch after just five minutes after a number of heavy tackles.
And further medical reports revealed the for 43-times capped former French international, and top try best scorer of the 1995 Rugby World Cup, had ruptured ligaments in his right knee.
The injury will sideline Lacroix for the rest of the season, and there are serious concerns this could end his career.
Lacroix quit USAP at the end of the last season, and joined Castres in November, despite plaudits from all corners, he was unable to help the avoid the dreaded play-downs.
But his influence has been seen in the PARKERPEN SHIELD, with Castres qualifying for the semi-final double header against Pau.