Roberts demands more from Wales

08 February 2013 09:03:03 EST

Jamie Roberts is determined that Wales put on an improved performance to mark his 50th appearance for his country against France on Saturday.

Wales started their Six Nations campaign with a 30-22 defeat to Ireland at the Millennium Stadium last weekend but Roberts is anticipating a better display by his team at Stade de France.

The defending Six Nations champions are 5/2 to retain their title but have lost their last eight matches and produced a woeful first-half display against Ireland and trailed 23-3 at the interval.

"In comparisons with the standards we have set as a team, that first half-hour against Ireland was very disappointing and it cost us the game. It is one of the worst Wales performances I have ever been involved in," said Cardiff Blues midfielder Roberts.

"Saturday night hurt. I could see it on the faces of all the boys. The fact is, if we defended better in the first 20 minutes we would have won the match. But we were 20 points down before we touched the ball.

"It is hugely frustrating because we all know the structure is there for us to win rugby games but we made the wrong decisions on the ball against Ireland. We all know that where there are chances to score tries there are chances to win games and we know we can cause France problems on Saturday."

Wales have not won in France since 2005 but are 3/1 to repeat that feat on Saturday.

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