Ospreys were outclassed in France as Clermont Auvergne ran in four tries for a bonus-point Heineken Cup win.
HEINEKEN CUP POOL THREE
Clermont Auvergne (20) 34
Tries: Audebert, Paulse, Longo-Elia,
Cons: Jones (4)
Pens: Jones (2)
Ospreys (11) 14
Try: S. Williams
Pen: Connor (2)
Drop goal: Connor
Wales fly-half Stephen Jones scored 14 points on his return from ankle injury, converting all Clermont's tries and adding two penalties.
Shane Williams' early try had given the Ospreys hope, but they then scored just nine points from Shaun Connor's boot.
Alexandre Audebert, Breyton Paulse, Gonzalo Longo-Elia and Sam Broomhall got the tries for the home side.
The Ospreys got a dream start when winger Williams jumped to catch Connor's clever cross-field kick to score after just four minutes.
But some weak tackling then allowed Clermont centre Raphael Chanal to burst through before sending flanker Audebert under the posts.
Ospreys full-back Damien Karauna then failed to deal with nothing more than a speculative kick that handed Breyton Paulse their second try on a plate.
Connor brought the Ospreys back into the tie with a drop goal on the stroke of half-time and then a second penalty three minutes into the second half as the Ospreys continued to hold their own against a powerful unit.
Trailing 20-14, a precious away win was clearly within their grasp but their defensive frailties hurt them once again as Clermont flexed their muscles in the final 20 minutes.
The Ospreys finally buckled after concerted pressure from Clermont's forwards that ended with Longo-Elia driving over.
Flanker Broomhall went over for the try of the match after a flowing move to clinch a bonus point that leaves Pool Three wide open after the first two rounds.
Clermont Auvergne fly-half Stephen Jones:
"We needed the win after losing our first match.
"The forwards were very good. It was a bit disjointed in attack at times, but that's how it is out here sometimes.
"I enjoyed the game - it was very physical and I'm delighted to have played the full 80 minutes.
Ospreys winger Shane Williams:
"It was a great start, but it's a shame we couldn't capitalise on it.
"They were a strong team but the tries we conceded were quite poor considering the effort we put into the game.
"It always takes the stuffing out of you but we didn't deserve to win. But we could have done with a bonus point."
Clermont Auvergne: Paulse; Rougerie, Chanal, Canale, Kiole; Jones, Mignoni; Shvelidze, Miguel, Zirakashvili, Barrier, Cudmore, Audebert, Broomhall, Longo-Elia.
Replacements: Garcia for Canale (74), Floch for Kiole (66), Emmanuelli for Shvelidze (60), Ledesma for Miguel (72), Vigouroux for Barrier (60), Vermeulen for Audebert (73).
Not Used: McMullen.
Ospreys: Karauna; Mustoe, Parker, L. Davies, S. Williams; Connor, Spice; D. Jones, Bennett, A. Jones, Cockbain, Newman, Bater, Pugh, Thomas.
Replacements: A. Bishop for Karauna (76), M. Jones for Connor (63), B. Williams for Bennett (47), Millward for A. Jones (63), Bateman for Newman (70), Beech for Bater (80).
Not Used: James.
Referee: Rob Dickson (Scotland)