Luke Currie was looking forward to what all Australian jockeys dream of doing - riding in a Caulfield Cup.
That was until Wednesday morning, when he answered a short, sharp phone call from Racing Victoria stewards.
Currie was told that he would be stood down after returning a urine sample that was positive to the banned substance didesmethylsibutramine (a dietary supplement) following a routine test.
The sample was taken from Currie at the Geelong meeting on September 27. He has been stood down immediately pending a stewards inquiry at a date to be fixed.
Currie was due to ride Mornington Cup winner Tuscan Fire in the $2.5 million race on Saturday. The gelding will now be ridden by New Zealander Michael Walker.
While Currie would not comment on the breach of rules, Victorian Jockeys Association chief executive Des O'Keefe said the hard-working rider was ''shattered''.
''Luke would be understandably devastated,'' said O'Keefe.
''He had done all the work on the horse and it was going into a race like the Caulfield Cup and at the last minute this happens.
''But it's the best reminder of all how terribly careful they have to be when taking any sort of product.''
Tuscan Fire, who has drawn barrier two, emerged as the rags-to-riches story of the Caulfield Cup, winning a start in the race with his success in the Mornington Cup in February.
According to trainer Dan O'Sullivan, the horse is ''going well''.
''Of course I'm feeling for Luke,'' said O'Sullivan. ''We did everything together and he must be just beyond words with what's happened. Caulfield Cups are not run every day and you don't get a ride in them every time.
''But the huge number of jockeys ringing up for the ride makes me think it's just not me who thinks Tuscan Fire can win the cup.
''All I can tell them is he is very fit and he's been off jumping three times since he ran in the Turnbull [Stakes],'' O'Sullivan said.