Wales have slipped below Italy to 10th in the latest IRB world rankings, published today.
Defeat to Ireland on Saturday was their eight on the bounce since winning the Grand Slam last spring.
Italy's famous win over France - who Wales face next - boosts them ahead of Rob Howley's side.
Scotland are now the only Six Nations side below Wales in the rankings.
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Aaron Ramsey has told his English team-mates at Arsenal to beware Wales overtaking them in the FIFA rankings.
Plenty of fine dry weather to come today and prolonged spells of sunshine. A cool easterly breeze will take the edge off the temperatures.
The three-day event in the Welsh capital is expected to attract more than 20,000 visitors.