Wales coach Mike Ruddock has told new fly-half Nicky Robinson that keeping the game plan simple should be the secret to success when the tourists go in search of revenge over Argentina in Buenos Aires tonight.

Cardiff Blues fly-half Robinson has profited from the failure of rival Ceri Sweeney to take the chance offered him by Ruddock in the 50-44 first Test defeat at Tucuman last weekend.

And the coach's actions have sent a clear message that failure to perform will lead to losing the red jersey.

Ruddock said, "Ceri didn't have his best game for Wales last weekend. He's a really talented guy and has a lot to offer, but it didn't go well for him and these things happen. Nicky took over in the second half and made a good impact and the reality is that he deserves to have a run.

"It's more so the case at this level that the competition for places is going to be stronger. At club level the gaps might be wider between the number one and number two players in their positions.

"They have all had international experience and it's good we have competition. That is what we are trying to generate. The message is loud and clear. We want good performances otherwise your place could be in jeopardy."

Robinson must now provide the tactical nous to ensure he does not suffer the same fate.

Ruddock said: "Nicky made quite an impact when he came on and I have to find out about him. He has a lot of ability and gets the line moving. He now needs to show us he has the maturity to run a Test match from fly-half.

"If possession slows down so much that we can't use it, I want Nicky to turn them and put the ball in the corner. I want him to go out and play his game and use our big centres to get us going forward. If we get quick ball, I want him to get the ball wide and if it's slow ball, turn the opposition. It's a pretty simple formula.

"Nicky has an opportunity - let's see if he can take it, I'm sure he will."

Pinning faith in Robinson was part of the reshuffle that also sees Tom Shanklin come in at centre and Gavin Henson switch to full back.

Ruddock said: "We want to use Gavin to attack out wide and he is going to be a big threat there. And if one of the other backs around him goes into contact, he, along with Hal Luscombe and Tom Shanklin, are big men who will hopefully have an impact on the first ball-competitor for Argentina and we will be able to clear the ball away."