Not long left until kick off in this Welsh derby.

Welcome to Ultimate Rugby's coverage of this Pro 12 fixture between Ospreys and Cardiff at the Liberty stadium. Ospreys come into this fixture as the only unbeaten team in the league and they will look to continue their winning form with a win today. Cardiff have not been able to play to the best of their ability as they sit 3rd from bottom with only one win from five so far this season.