|London Welsh (6) 20|
|Tries: Jewell, Browne Cons: Barkley (2) Pens: Barkley (2)|
|Bordeaux-Begles (31) 52|
|Tries: Blanc, Talebula, Maynadier, Clarkin, Bernard, Domvo (2) Cons: Bernard (7) Pens: Bernard|
London Welsh were given a lesson in expansive running rugby as Bordeaux cruised to a 52-20 win in Oxford.
The French side secured a bonus point before half-time after tries from Lucas Blanc, Metuisela Talebula, Clement Maynadier and Matt Clarkin.
Seb Jewell hit back just after the break before Pierre Bernard and Darly Domvo went over in quick succession.
Daniel Browne got a second Welsh try on 70 minutes before Domvo sprinted in from inside his own half late on.
Welsh had started the brighter and forced two early penalties, only one of which Olly Barkley converted.
But from then on Bordeaux showed why they are third in the Top 14 while Welsh are languishing at the bottom of the Premiership.
|London Welsh's poor defence|
|Since being promoted from the Championship London Welsh have conceded more than 50 points against Exeter, Harlequins, Bath and Bordeaux-Begles|
|Sale and Gloucester each scored 46 points against Welsh|
|Their best result has been a 23-3 loss at home to second-from-bottom Newcastle in the Premiership|
|In eight games they have conceded 352 points, an average of 44 per game|
The visitors' first try may have been against the run of play, but was one of the best seen in the Challenge Cup as a beautiful flowing move that began in their own 22 ended with an impressive display in the backs that freed Blanc to dive over.
Bernard thumped a penalty from almost halfway to extend the lead before a second tremendous try after 28 minutes.
Bordeaux picked off Welsh inside their own quarter and sprayed it out to Talabula on the left wing who outsprinted the defence before kicking a sublime grubber kick towards the corner which he dived on.
Five minutes later they got a third try as Maynadier was pushed over after some poor Welsh tackling from a lineout five metres out.
The bonus point was secured just before the break as another beautiful flowing move ended with Clarkin going over.
Welsh started the second half as brightly as they started the first and came away with a well-deserved try as Jewell broke through a stubborn goal-line defence.
But it was only a blip as tries five and six came within two minutes of one another - Bernard easily sidestepping Gordon Ross to go over from 10 metres out before Domvo was put clear by Talabula after the winger gathered a cross-field kick to the left.
Browne ensured something to cheer about for the home side as he went over from a metre out, but Domvo rounded off the win another magical try.
The full-back gathered a kick inside his own half and blasted through a ragged Welsh defence to send Bordeaux over the 50-point mark.
London Welsh: Jewell; Crane, Lewis, Barkley, Scott; Ross, Rowley; Cahill, Dobson, Vea; Corker (capt), Schofield; West, Thorpe, Browne.
Replacements: Britton, Reeves, Gilding, Browne, Pienaar, Lewis, Roberts, Elder.
Bordeaux-Begles: Domvo, Talebula, Brousse, Lacroix, Blanc, Bernard, Lesgourgues; Delboulbes, Maynadier, Gomez Kodela, Le Devedec, Marais, Madaule, Chalmers, Clarkin.
Replacements: Auzqui, Taofifenua, Sa, Botha, Guiry, Beauxis, Serin, Connor.