Toulouse's stock continues to tumble as last weekend Montpellier became the first side to win at the Stade Ernest-Wallon in the Top 14 this season.
Up until then Connacht's Heineken Cup heroics had been Toulouse's only slip-up there this campaign, but a 15-12 defeat to their south-coast rivals sees Guy Noves' side remain outside the top six play-off positions.
In fact, it could have been a lot worse for Munster's next Heineken Cup opponents as both Grenoble and Racing Metro failed to register wins that could have seen Toulouse slip to eighth place.
Saturday's defeat came with six of their big hitters away on French international duty – Yoann Maestri, Louis Picamoles, Yannick Nyanga, Jean-Marc Doussain, Yoann Huget and Gael Fickou were all required for France's clash against Italy.
They will be hoping for a better return tomorrow when they make the short trip to the Parc des Sports Aguilera, to take on bottom side Biarritz, who have lost their last five Top 14 games.