As predicted by officials on Friday, the track rating for 2013 Golden Slipper Day at Rosehill is a Slow 7.
The wet track leaves the majority of Golden Slipper runners heading into unknown territory as they attempt to score top honours in the $3.5 million sprint.
Gai Waterhouse-trained favourite Overreach has been on the drift since the wet weather was predicted and she is now out to $2.70 after being as short as $2.10 at bookmaker.com.au on Wednesday.
The money has continued to pour for Sweet Idea who has shortened to $8.50 from her opening quote of $15.
Also from the stable of four-time winning trainer Waterhouse, Sweet Idea is one of the few Slipper contenders proven in the wet.
The daughter of Snitzel toughed out a gritty win in the Silver Slipper on heavy ground last month.
Steady at $9 is Darley colt Sidestep who was the early week market mover. The Peter Snowden-trained galloper is backing up seven days after winning the Pago Pago Stakes and will have blinkers applied for the hit-out.
There has been little movement in the rest of the betting market and Victorian grey Villa Verde remains a $12 chance.
The Shaun Dwyer-trained filly was considered the best chance of upsetting Overreach before finishing 4 1/2 lengths behind her in the Moet and Chandon Stakes.
Also expected to thrive in the soft ground is New Zealand filly Ruud Awakening ($13) but she will have to overcome her outside barrier position.
Joining Ruud Awakening at $13 is Todman Stakes winner Criterion who will chase a third consecutive victory.
Blue Diamond runner-up Fast ‘N’ Rocking has shortened to $19 from $21, the same price as Gai Waterhouse’s third runner Whittington.
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