Australia and Wales meet on Sunday morning in their crucial Pool D clash.
Wales won their opening match against Georgia 43-14, while Australia beat Fiji 39-21.
This will be their seventh encounter at a Rugby World Cup, with Australia winning five of those matches.
Australia coach Michael Cheika has warned his side to expect a tough encounter on Sunday in Japan.
“I’ve been privileged to be part of a few of these now and they’re always very tight. For my first Test match in charge of Australia I had the privilege of going to Cardiff,” he said.
“We like to run with the ball, they like to play a lot of counter-attacking footie sometimes and they’re great defenders as well. We’ve got very contrasting styles.
“The one thing you see in these games is full commitment from all players on both sides, which makes them tight. It’s an interesting sort of battle – last year there was a fair bit of ball movement, but nobody scored a try.
“Once you start having a series of close games, they almost become self-fulfilling prophecies because everyone sort of knows what’s going to happen. It’s a good rivalry.”
Wales coach Warren Gatland added: “We have not really looked too far ahead. If you do get out of the group, all quarter-finals are going to be pretty tough. It is about taking one game at a time and trying to build and create momentum.
“We feel as if we are a team who are capable of doing that, the longer we go in tournaments we feel as if we get better and more cohesive.
“It is a pretty good start in the first game. It is going to be a tough Australian team, but we have had some close battles in recent times and were good enough to get a win last time.
“We have trained well this week and the guys have definitely gone up a notch in intensity. I think it’s going to be a great game.”