A narrow one-point loss to Ulster sees them replaced at the top of the table by the side that beat them by 10 points to nine at Ravenhill.
Read match reports on the Celtic League site
Cardiff produced the shock of the weekend as they powered their way to seven tries in a massive 50-10 beating of Edinburgh.
The Celtic Cup runners up had no match for the marauding forwards and slick back line play of the Blues.
The Dragons showed they are serious contenders for the Celtic Crown as they torn apart a Leinster side at Rodney Parade.
Even the Ospreys got in on the act, beating a hapless Glasgow side 33-10 at The Gnoll, with Gavin Henson the starring figure as he scored 23 points.
Read match reports on the Celtic League site
Saturday’s match saw the Celtic Warriors produce the goods with a magnificent come-from-behind 40-17 victory over Connacht at the Brewery Field.
