Ayr finally gets go ahead
Ayr has beaten the frosty conditions
(Healy Racing Photos)
Frost was the big concern at the Scottish venue, but temperatures have risen sufficiently during the morning for the jumps fixture to be given the thumbs-up.
A protracted third inspection at 12pm revealed a positive outcome, with the going officially soft.
Ayr's card, an additional fixture granted last week by the British Horseracing Authority in response to the wintry weather, is the first turf racing to take place since last Thursday.
Big Zeb, whose six wins at Grade 1 level included the Queen Mother Champion Chase at Cheltenham in 2010, has been retired.