In the end it could have been a lot worse. Bristol score nine tries and gained the bonus point they needed to take them into the quarter finals.
Five of the tries came in the first half, the last one just before half time would grace any best tries DVD. Ben Moses was first on the board as he went straight up the middle to score under the posts. Tristan Roberts did the same two minutes later before hooker Rhys Lawrence went in from a line out.
Wayne Thompson was next over the whitewash before a sweeping move was rounded off by George Watkins, Roberts converted all of them for a 35-0 half time scoreline.
The second half could have seen much more of the same, but the young Blue & Blacks side dug in and showed a lot of character for such young shoulders. And they got on the scoreboard themselves. James Thomas put Max Woodward into a hole and he made the most of the gap, cruising through before popping the ball to the supporting Will Thomas.
In between Bristol scored four more tries but Cardiff had the last say. Cardiff were trying to play all game and when Jamie Davies, who was returning from injury came off the bench and found a loose ball he weaved his way through the Bristol defence and found the supporting Joe Griffin outside him to score. Griffin added the extras before the referee blew for no side.