We drew the first leg of our second round clash 0-0 at Griffin Park on Tuesday night despite losing skipper Sol Campbell and playing with 10 men for 30 minutes after Neil Sullivan's sending off. We meet again at the Lane on Tuesday September 26.
Full-back Carr commented: "It was messy game, a tough game and it always is away from home against this type of club.
"They always raise their game and Brentford got at us throughout, putting the ball behind us. It was frustrating but it was important not to get beaten.We could have still won it even though we didn't play really well.
"We also kept a clean sheet and we should be confident now going back to White Hart Lane. It will be completely different story. We can keep going at them and attacking them. We'll be confident of winning it now - without being over-confident."
Chances were few and far between on a rain-soaked night in West London. Home goalkeeper Olafur Gottskalksson produced a few fine saves in the conditions and Matthew Etherington dragged our best chance wide in the first half. For all their huff and puff, the Bees didn't really test Sullivan or Ian Walker.
Carr added: "We had a couple of things go against us but that will always happen in games and it is all about how you react. We reacted well. You have to get on with it.
"That's the advantage of having the players in the squad to come in. We've got Ian Walker coming in, he's been frustrated on the bench but now he'll get his chance."
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Stephen Carr is confident of finishing the job off against Brentford in the Worthington Cup at White Hart Lane.