The British & Irish Lions find themselves in must-win territory as they take on the All Blacks at the Westpac Stadium following defeat in the opening Test.
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Victory would set up a decider back at Eden Park, and Murray will have a familiar half-back partner on Saturday as Ireland teammate Jonathan Sexton returns at fly half, with Owen Farrell shifting to centre.
And Murray believes that it is simply a case of improving the finishing that could make all the difference as the Lions look to level the series.
He said: “I’m delighted again to the get the nod, it’s a really competitive squad. We were close last week but we know we can improve on a couple of things.
“There’s an excitement in the group about this weekend. I’m honoured and delighted again to get an opportunity to put on that jersey.
“We’ve got to take our chances. If we learned anything from last week, it was that we created the same amount of line breaks as New Zealand but they finished a bit more than us. That’s the exciting thing, there are chances for us to take, it’s up to us to be clinical now. It’s exciting, there’s pressure on us but these are the games you want to be involved in.
“Last week was one of the biggest games of my career and I think this weekend it’s that again with a little bit more added to it because we’ve got to win.
“We’ve got to perform; every player is honoured to get the chance to pull on the jersey and go out there and represent yourself and your club and where you come from and hopefully make it happen.”
Since the first Test, Murray and the Lions have been in the New Zealand capital, regularly meeting the huge numbers of supporters who have flown over from Europe.
And the scrum half revealed that the support of the fans has really boosted the players on and off the pitch.
He added: “The support is incredible, I can’t get over it, the amount of people from Ireland, England, Scotland and Wales. They come up to you in the street and ask you how things are going.
“The sheer numbers, in the lead-up to the game day, you can see the city. You can feel the buzz building, when you run out to warm up, particularly last weekend in Auckland, the buzz hits you straightaway, they were singing from the warm-up all the way through the game. Having them on our side again this weekend is going to be pretty good.”