TOKYO — Six Nations champions Wales took a massive step towards topping Pool D with a thrilling 29-25 victory over valiant Australia as Georgia overpowered Uruguay for a 33-7 bonus-point win in the Rugby World Cup on Sunday.

The Welsh were 23-8 ahead at half-time but they had to withstand a furious second-half onslaught when Australia fought back to within a point late in the game.

Wales, 43-14 winners over Georgia in their opener, will now be confident of finishing their pool unbeaten, with their next opponents Fiji in Oita on October 9 before taking on Uruguay in Kumamoto four days later.

"Relief at the moment," said Wales coach Warren Gatland, when asked what he was feeling after the match. "Tough second half but the boys pulled through.

"It was a tough Test match. Very pleased with the first half. We didn't have a lot of ball in the second half and Australia kept coming at us and putting us under a huge amount of pressure. But we were able to hold on thankfully."

Australia captain Michael Hooper said the game "came down to the wire".

"Some big calls there. Some went our way, some didn't," said Hooper.

"We've got to pick ourselves back up. We'll review it. Probably right now recovery's key. We've got a six day turnaround. This sort of format, competition, you've got to move on pretty quick."

An electric game full of enterprising, interlinking play from both sides on a balmy late afternoon in the Japanese capital made for a marvelous spectacle of running rugby.

The 47,885-strong crowd had barely taken their seats after the anthems when Wales were on the scoreboard.

The ubiquitous Aaron Wainwright turned over esteemed Wallaby jackler Michael Hooper from the kick-off, Gareth Davies finding Dan Biggar in the box for a straightforward drop-goal with just 37 seconds on the clock.

Biggar went wide on his first penalty attempt minutes later as Wales continued to attack with fluidity, George North being brought down with the line begging.

The largely red and yellow crowd at Tokyo Stadium traded respective ballads, 'Hymns and Arias' for 'Waltzing Matilda' with mutual applause for both renditions. A hearty round of collective boos, however, rang out when an image of England coach Eddie Jones was shown on the big screen.

Biggar spurned a second shot at goal as Wales looked to build on their momentum.

The ball was quickly recycled from the attacking line-out, Biggar putting in an inch-perfect crosskick that Hadleigh Parkes gathered, the Kiwi-born centre outleaping Marika Koroibete and spinning past Dane Haylett-Petty to dot down in the corner.

The Welsh fly-half hit the extras but saw a second, long-range drop-goal go wide.

Hooper escaped punishment for a late, high hit on Biggar, French referee Romain Poite deciding a penalty was sufficient.

Wales lost their throw-in from the kick, handing Australia the chance to fire back down the pitch, a Parkes tackle on opposite number Samu Kerevi preventing a sure try.

The Wallaby forwards arrived en masse, and with the Welsh defense scrambling, Bernard Foley cross-kicked perfectly to veteran Adam Ashley-Cooper, the winger stepping inside Josh Adams with aplomb to scramble over for a deserved try.

Foley scuffed the conversion, but with both sides more than willing to throw the ball around, it didn't seem to matter.

Biggar bundled Serevi into touch after the strapping Fiji-born center had two-stepped around Jonathan Davies, but the fly-half paid for that defensive showing by being subbed off with a head injury, replaced by Rhys Patchell.

Foley and Patchell traded penalties before Gareth Davies pounced to intercept a deep pass from a stuttering Will Genia to sprint home from 60 meters.

Patchell converted to make it 23-8 at half-time and dropped a goal four minutes into the second period as Wales looked to turn the screw.

Australia were far from done, however, David Pocock providing the perfect offload for Dane Haylett-Petty to score the Wallabies' second try, Matt Toomua converting.

The Welsh defense, built around No. 8 Josh Navidi and skipper Alun Wyn Jones, winning a Wales-record 130th cap, could only hold firm for so long as Australia proceeded to camp out in their 22m area with a series of set-pieces, Hooper eventually being driven for an invaluable try Toomua converted.

Games between the two sides are traditionally tight and so it again proved, Toomua hitting a 69th-minute penalty to reduce Wales' lead to just one point.

Patchell responded in kind, Tomos Williams kept an Australian kick to touch in play and Wales saw out a tense final five minutes to set themselves up as likely Pool D winners.

Earlier in Kumagaya, Georgia overpowered Uruguay for a 33-7 bonus-point win on Sunday, the popular South American underdogs unable to repeat their heroics against Fiji four days earlier.

A dominant forward display laid the foundation for an impressive victory by Georgia, who will now target an upset against Australia on October 11 as their path to a shock quarter-final place from Pool D.

Uruguay had rocked the tournament with its first shock result, beating highly talented Fiji by 30-27 in a pulsating match in Kamaishi on Wednesday.

But Georgia coach Milton Haig had targeted Sunday's clash as a "must-win" game and made 12 changes from the side that lost 43-14 to Wales.

"Really proud of the boys and of how we played. It was important for us to get this first win out of the way," said Haig.

"We've worked so hard over the last four months – even four years really – so pretty stoked that we ended up getting the job done.

"The pack is a strength of ours, scrum time, maul time, stuff like that. We knew they would come down, four-day turnaround for Uruguay. We knew it would be tough for them."

It was Haig's side – ranked six places above Uruguay – that started the brighter, a sustained spell of forward dominance at the scrum leaving space out wide for winger Alexander Todua to score in the left corner.

Both sides struggled to impose themselves early in energy-sapping humidity in Kumagaya, which saw the first water breaks at this year's Rugby World Cup.

Georgia's next score came on the half-hour mark. The forwards shoved Uruguay back with another powerful scrum, leaving number eight Otari Giorgadze to pick up at the base and dive over.

Uruguay hit back against the run of play, a clever inside ball slicing up the Georgian defense and leaving inside center Andres Vilaseca a free run in under the posts.

Esteban Meneses' men could have reduced their arrears further but Felipe Berchesi pushed a penalty attempt wide and the teams turned with Georgia leading 12-7.

Georgia extended their advantage only minutes after half-time, with Uruguay again unable to resist pressure from the heavy forwards and letting prop Levan Chilachava force his way over for a try brilliantly converted from the touchline.

A catch-and-drive from a line-out finished off by Giorgadze secured the bonus-point for Georgia as Uruguay found no answer to the heavier pack.

Uruguay were wilting in the heat and humidity, and a tired error on their own line let outside centre Giorgi Kveseladze in for an easy try to put the result well beyond doubt.

And with only three minutes left on the clock, Uruguayan replacement Facundo Gattas saw a red card for a high shoulder charge to the head, the tournament's second on-pitch dismissal.

Meneses refused to blame the four-day turnaround for Uruguay's defeat, saying: "We knew (about) this. We were preparing for this. We (made) preparations, physical and technical and mental.

"We were prepared for this." — AFP