David Hayes is convinced his two Golden Slipper runners are being underestimated.

But he says the pace of the race the tactics used on the favourite Vancouver from his wide alley, will determine which of the two has the best chance at an upset.

"I think the market hasn't assessed the babies 100 per cent correct again," Hayes said.

"It's a bit distorted. I think some of the long shots are a lot better chances than the market suggests, especially mine.

"If the pace is leisurely Haybah will run a much better race than her odds suggest and if the pace is frantic Reemah will run a good race. She'll be coming from back in the field," Hayes said.

Blue Diamond Stakes runner-up Reemah is at $35 while Haybah is at $71.

Reemah defied her price of $101 in the Blue Diamond when she just failed to catch Pride Of Dubai.

The Gai Waterhouse-trained unbeaten colt Vancouver is at $2.80 and has been dominant in crucial Slipper lead-ups.

"If Vancouver goes forward it has to be quick. If he goes back it might not be," Hayes said.

Hayes, who now trains in partnership with Tom Dabernig, won the Golden Slipper in 2006 with Miss Finland who also finished second in the Blue Diamond.

He hopes that's an omen for Reemah.

"And she (Miss Finland) is by a stallion called Redoute's Choice. So is Reemah," he said.

Craig Williams, who rode Miss Finland, will be aboard Serenade who has gained a start as first emergency with the scratching of his mount Look To The Stars on Friday with a hoof abscess.