Captain Sam Warburton says tonight's game was one of the toughest test matches he'd ever played in.
He says the boys were 'shattered' after the England game and had a tight turnaround for Fiji. Last time Wales met Fiji in the World Cup they won 66-0, but Warburton says this islander side was a completely different team.
Looking ahead to Australia, he says the Wallabies always seem to up their game when they come to the Millennium Stadium, but he knows the team have the makings to beat them.
"It's going to be another huge battle between England Australia and ourselves and Australia. I think you're going to get games with a try in it either way. They're all 50/50 matches really so it'll be another exciting match next weekend."
Warren Gatland praised the Wales' team's character in digging deep to win against Fiji.
Speaking at the post match presser, Gatland said some of the players were a bit sore, but no one had a significant injury. Dan Bigger limped off in the last 10 minutes, but just had cramp.
Dan Lydiate - who picked up his 50th cap today - is being assessed after getting a knock to his eye socket and Matthew Morgan had a bit of blurred vision. Gatland was quick to rule out that Morgan had any sort of knock to the head and said it was down to exhaustion.
"They're a tough, good unit, some big players. We were under some pressure but I thought we fixed things up quite well," said Gatland.
The squad have a couple of days off before preparations for Australia begin, but Gatland says there will be things to work on before the last pool stage clash.
He joked that while while he's hoping Australia will do Wales a favour by beating England, "it's hard for a Kiwi to cheer the Wallabies on."
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Warren Gatland says Fiji threw everything at them, but Wales dug deep and held on to win.
He says he hopes Australia will do them a big favour by beating England on Saturday, but the win has given them a chance.
Sam Warburton says Fiji played liked they had nothing to lose, but Wales' priority was to win.
He said the one team in Pool A they couldn't underestimate was Fiji and so they couldn't be complacent and throw the game away.
"We just had to get the victory in the bank because qualifying is paramount."
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Wales are a step closer to the quarter finals after holding on to their half time lead to beat Fiji.
Vereniki Goneva powered over the line for Fiji not long after the second half started, with Ben Volavola adding the conversion.
There will be worries over Dan Biggar who limped off in the 10 minutes of the game after scoring three penalties and converting Wales' two tries.
First-half scorer Gareth Davies could have gone over again, but it was ruled out by the TMO.
Final score Wales 23-13 Fiji.
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Wales lead Fiji at half time at the Millennium Stadium.
Gareth Davies opened the scoring for Wales, before Scott Baldwin picked up where Tyler Morgan left off to give them a second.
Watch the tries:
Half time Wales 17-6 Fiji.