Bordeaux-Bègles held off a dramatic fightback from the Ospreys as both sides scored four tries in a 33-27 win for the hosts in the Champions Cup.
The Welsh side would return home with two bonus points however, keeping them at the top of the Pool, having scored four tries of their own away from home.
A storming start to the match saw both teams score tries in the opening four minutes of the game, with Julien Rey putting the French side ahead before Justin Tipuric cancelled it out.
It took just 71 seconds for Rey to scramble over the line and open the scoring for the home side, with fly-half Pierre Bernard taking the score to 7-0 in the opening minutes.
Moments later Jeff Hassler broke free of the Bordeaux defence, before finding Tipuric to touch down.
Welsh international Dan Biggar converted his first attempt at the posts. Bernard then took the opportunity to take Bordeaux three points clear, converting his second chance in the game from more than 40 metres with eight minutes on the clock.
Against the run of play, 14-man Bordeaux went further clear through Berend Botha, who burst through several Ospreys tackle to dive for the line.
Bernard missed out on scoring another five points for his side, missing the conversion following Botha's try before missing a penalty just four minutes later.
As the Welsh side looked for a way back in to the game, Sam Davies looked for a long, sweeping pass out to Dan Evans who fumbled the catch, allowing Sofiane Guitoune to turn on the afterburners and score from his own 22-metre line. Bernard found his feet once more and converted with ease.
Biggar converted a penalty in the last seconds of the first half, taking the Ospreys in to double figures as they look to fight back at Stade Chaban-Delmas.
After a period of sustained pressure, Ospreys find their way over the line after 52 minutes after the ball was moved across the backs with speed, allowing Eli Walker to run the ball home.
Biggar's first successful kick was interrupted by the decision to go to the TMO, his second attempt flew wide of the posts much to the disapproval of the Welshman.
As the Ospreys pushed hard for another try to bring them within a losing bonus point margin, Bordeaux once again scored a try on the counter attack with only 14 men on the field, as Yann Lesgourgues broke out from the back to chase his own kick and touch down.
With Bernard off the pitch, kicking duty was handed to Metuisela Talebula who sent the kick wide.
Tries from Alun Wyn Jones and Biggar set up a frantic final period in the game, as well as ensuring that the Ospreys would return home with at least one bonus point to their name.
Despite a lapse in concentration that almost allowed Ospreys back in to the game, Bordeaux demonstrated their resilience to see out the game, seeing them rise above Clermont at the bottom of Pool 2.
Tries: Rey, Botha, Guitoune, Lesgourges
Cons: Bernard 2
Pens: Bernard 2, Serin
Yellow Cards: Maynadier, Serin
Tries: Tipuric, Walker, AW Jones, Biggar
Cons: Biggar 2
UBB: 15 Jean-Marcellin Buttin, 14 Metuisela Talebulamaijaina, 13 Adam Ashley-Cooper, 12 Julien Rey, 11 Sofiane Guitoune, 10 Pierre Bernard, 9 Heini Adams, 8 Marco Tauleigne, 7 Matthew Clarkin, 6 Louis Madaule, 5 Berend Botha, 4 Julien Le Devedec, 3 Sekope Kepu, 2 Clement Maynadier, 1 Jefferson Poirot.
Replacements: 16 Ole Avei, 17 Steven Kitshoff, 18 Francisco Gomez Kodela, 19 Jan Andre Marais, 20 Loann Goujon, 21 Yann Lesgourgues, 22 Baptiste Serin, 23 Darly Domvo.
Ospreys: 15 Dan Evans, 14 Jeff Hassler, 13 Ben John, 12 Josh Matavesi, 11 Eli Walker, 10 Dan Biggar, 9 Tom Habberfield, 8 James King, 7 Justin Tipuric, 6 Dan Lydiate, 5 Alun Wyn Jones (c), 4 Lloyd Ashley, 3 Dmitri Arhip, 2 Scott Baldwin, 1 Paul James.
Replacements: 16 Sam Parry, 17 Ryan Bevington, 18 Aaron Jarvis, 19 Rory Thornton, 20 Dan Baker, 21 Martin Roberts, 22 Sam Davies, 23 Hanno Dirksen.
Referee: Luke Pearce (England)
Assistant Referees: Matthew Carley (England), Peter Allan (England)
TMO: Rowan Kitt (England)