Despite an exceptional international try-scoring record so far Scotland's Rob Dewey is well aware that he cannot let hiss concentration in defence slip one bit when Ireland visit Murrayfield on Saturday.

With three tries in only four international appearances, Dewey has quickly established himself as Scotland's most potent attacking player, but when he faces Ireland captain Brian O'Driscoll and Gordon D'Arcy, he will have his work cut out.

However he is relishing taking on arguably the best centre partnership in world rugby.

"They are two brilliant players in their own right, and Ireland have been playing well as a team as well, so there is plenty to look forward to," said the 23-year-old inside centre.

"Those two players provide the sparks for the rest of the players behind them, and they've done that on countless occasions.

"We just have to close them down. They are great at winning ball on the deck, they run great lines, and moments of genius from either one of those two can win games for their team."

That captain, in particular, can "nip through the smallest of gaps and then offload the ball", says Dewey. "His offloading out of contact is second to none. He knows where his team-mates are going to be, and can flick the ball anywhere.

"It's just brilliant to watch, and those kinds of things, as a centre, you are trying to aspire to all the time.

"I love the way he plays rugby. He's so quick at getting up and over the tackled man to steal ball, and that's brilliant to see - it's something I've been working on myself."

Despite his obvious admiration for the pair, Dewey has taken confidence from scoring Edinburgh's only try when they defeated a Leinster side containing the same three-quarter line as Ireland will field on Saturday in the Heineken Cup last October.

"I played against them earlier on in the season and it was a good win for the boys, so hopefully I can put in another good performance against them this weekend, if selected," he said.

"Ireland is a massive challenge for us. They put in a great performance in their last match against England at Croke Park, while we lost against Italy - but we've highlighted a few key areas we've got to work on this week, and hopefully that will pay dividends at the weekend."