Newport Gwent Dragons coach Paul Turner admitted his team could have few complaints over their 26-8 defeat to Biarritz Olympique.
Richard Fussell handed the Dragons an early lead as they looked to bounce back from a heavy defeat in the south of France last week.
But the Dragons failed to adapt to a switch in venue to Llanelli's Parc y Scarlets after their Rodney Parade home was ruled unplayable due to a frozen pitch on Friday night.
And Dimitri Yachvili capped a remarkable man of the match performance with 23 points, that included both his team's tries, with only Damien Traille adding a drop goal.
The defeat, a third in four pool games for the Dragons, has virtually ended their hopes of progressing to the quarter-finals of the Heineken Cup.
Turner said: "It was disappointing to have to leave Rodney Parade because we were really looking forward to getting them on our home patch and putting some pressure on them.
"But they played a very tight game, they got their fringe game going and disappointingly we get sucked into playing the same way. Then Yachvili did the rest.
"The most disappointing aspect was that we didn't produce the sort of performances that we showed earlier in the season. Our accuracy was not there, our skill level was poor and we didn't look like a team.
"We missed a few key forwards at times, especially against a quality team like Biarritz."
The Dragons remained in the tie at half-time when they trailed 9-8 but Yachvili pulled the strings as Biarritz crept out of sight for a fourth win on the bounce that has put them clear at the top of Pool Two and all-but guaranteed their place in the quarter-finals of the Heineken Cup.
Man of the match Yachvili said: "We are very pleased to get this win. We knew it would be difficult coming to Wales and we expected a strong reaction from the Dragons after last week's game.
"It was not easy because the game was delayed from Friday night so that was a disruption but I thought we played an intelligent game. We are in a good position in the Pool but we still have two games to go and we will not stop playing now."