Almost 4 billion people will be tuned to the World Cup over the next few weeks.
Wales - of course aren't in the competition - but there's always England to support...
Tom Sheldrick went out to find out how excited people in Wales are for what's known as the greatest show on Earth.
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Warburton went off in the second half during the Six Nations clash after he took a blow to his knee.
David Cameron says this should be a day for people to celebrate 'all that embodies Wales'.
Rain moving east, will spread across Wales in the first half of the night, some likely heavy.