Ospreys are caught holding on. Castres win a penalty on halfway

Some strong defense from Ospreys forces a knock and the home side look to counter

Ospreys carry up to the 22m. Ospreys defense hold firm as Ospreys knock on. However Ospreys were offside. Shot called

First penalty goes to Ospreys on halfway

Both teams exchanging kicks as they look for the territorial gain

Castres get the game underway

Ospreys welcome Castres to the Liberty Stadium in round 1 of the Challenge Cup. Both teams are looking to put their domestic form behind them as they look for a good start to the competition. Ospreys won the last battle between the two sides back in 2013