Ospreys will be without Wales wing sensation Shane Williams for Friday's mouth-watering Celtic League showdown with Leinster.
Williams misses out with a dead leg and joins fellow internationals Gavin Henson and Mike Phillips on the sidelines.
Coach Sean Holley makes 13 changes from the win at Glasgow Warriors as his side bids to maintain it’s unbeaten start to the season.
Wales and Ospreys captain Ryan Jones expects his men will have to step their game up a notch to gain a fourth successive win of the campaign at the Royal Dublin Showgrounds.
He said: "Every game has been a test. We've put in some good performances so far but Leinster are the champions, and playing like it."