Ulster coach Brian McLaughlin admitted his side only have themselves to blame for finding themselves on the wrong side of a 38-27 Magners League result against the Ospreys.
The Irish side had led 18-12 at half time and were 27-25 ahead when Ospreys lock Ian Gough was yellow carded on 66 minutes.
But McLaughlin’s men gave away two soft penalties and then could only watch as Tommy Bowe wrapped up Osprey’s bonus-point win that lifted the Welsh side into second in the league.
“There were some good things about the performance tonight and I think you also have to look at who we were playing. Ospreys had eight British Lions out there tonight, as well as two All Blacks,” said McLaughlin.
“They are a quality side and showed they are capable of coming back at you, which they did tonight.
“To be fair from our point of view we are exceptionally disappointed with the defeat, but on the back of previous performances we are pleased that we were playing a bit of rugby again tonight.
“We did turn over a little bit of ball, but at least we played and you certainly cannot fault their endeavour.”