Australian Cup runner-up Extra Zero is almost certain to contest the Group One BMW in Sydney on Saturday but he has been paid up for the Mornington Cup on the same day as a precaution.

"More than likely he'll be running in Sydney, we're just monitoring the track condition," co-trainer Tom Dabernig said.

"Rosehill was put up as a heavy eight at acceptance time but the weather forecast is to be clear from now until Saturday.

"He's scheduled to leave for Sydney on Thursday night and at this stage it's about 95 per cent he'll be running in Sydney."

Extra Zero started at $101 in the Australian Cup last start when he charged home from back in the field to be beaten in a photo finish by stablemate Spillway.

Dabernig said the eight-year-old had come through the race well despite the fact it was his 13th start this campaign.

"He's done a treat. He's been at the farm and obviously at this stage of his preparation we can't really get him any fitter but it's just a matter of keeping him happy," Dabernig said.

Extra Zero's performance in the Australian Cup prompted David Hayes and Dabernig to look at The BMW.

He is a $26 chance for the 2400m weight-for-age race with Japan's To The World favourite at $2.80.

The $350,000 Mornington Cup has attracted a full field of 14 plus three emergencies with the winner to be granted a ballot exemption for this year's Caulfield Cup.

The Darren Weir-trained Akzar is the $4.40 favourite ahead of Index Linked ($5) and Entirely Platinum ($5.50).

Extra Zero has been installed at $6.