Champagne Fever has been ruled out of the Queen Mother chase.
The Willie Mullins runner which was due to be ridden by Ruby Walsh got injured on the way to the festival and hasn't recovered in time.
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2014 victor Sire de Grugy remains the favourite for the feature ahead of 2013 champion Sprinter Sacre.
The feature race goes to post at 3.20 while the opener is away at 1.30.