Profiles of the 2015 Rugby World Cup teams.
While they are ranked eighth coming into the World Cup, Argentina's ability to surprise and stronger teams should not be underestimated.
Australia will face some fierce competition for a quarter finals place after being included in Pool A along with England, Wales, Uruguay and Fiji.
While Canada have a prime opportunity to rack up a win against Romania in pool play, they will struggle to overcome France, Ireland or Italy.
The 2003 champions have some momentum heading into the tournament and with home advantage they could be one of the more dominant teams.
France's unpredictable style means that they will be a force to be reckoned with, and cannot be underestimated at Rugby World Cup time.
While Fiji's performances at previous World Cups have been erratic, their attacking style of play is likely to leave many teams guessing.
Having made their World Cup debut in 2003, Georgia have their best chance of adding to that tally against Pool C opponents Namibia.
Ranked sixth coming into the World Cup, Ireland will be hoping that this is the year they can advance past the quarter finals for the first time.
While not stacked with big-name players, Italy are an experienced team that have the potential to cause upsets.
Japan will need to have to adjust rapidly to the step up in class to tackle their formidable Pool B opponents South Africa, Samoa, Scotland and USA.
Namibia have been in every World Cup since 1999, but are yet to win a game at the tournament.
The defending champions look in good form ahead of the Rugby World Cup. While they have a shaky World Cup history, the team must be quietly confident ahead of this year's tournament.
Known for playing with passion, Romania will be eyeing up their Pool D game against Canada as their most likely chance of victory
Samoa have proven to be a team who can challenge higher-ranked teams and play with a unique brand of Pacific flair.
As part of Pool B Scotland are unlikely to beat the Springboks, and will face tough challenges from Samoa and Japan.
The two-time world champions are ranked third going into the Cup. With such a proud and strong rugby tradition they cannot be ruled out as potential victors.
Playing with passion and pride, Tonga could prove difficult opponents for the higher-ranked teams.
Uruguay's team includes four European-based players, who will bring experience and a level of professionalism to the team. But they will struggle in Pool A.
The Eagles face a daunting World Cup assignment, where they tackle South Africa, Samoa, Scotland and Japan in Pool B.
With England and Australia lying in wait, the Welsh team will need their best players fit and firing.