Perth raider Luckygray remains favourite for the A$220,000 ($284,600) P B Lawrence Stakes today, despite a question mark over his ability in the wet.
Caulfield was rated in the heavy range on Thursday, with further rain forecast leading into the weekend.
Luckygray has never raced on ground worse than dead and trainer Gino Poletti says he has no real guide on how the $3.20 TAB Sportsbet favourite will handle the mud.
He is instead relying on the influence of Luckygray's dam, who is by noted wet track sire Mukaddamah, and the racing adage that grey horses run well in the wet. "I'm banking on the Mukaddamah mare and him being grey," Poletti said, with a laugh.
"I can't change the fact he hasn't been on it before so we'll just go into the race knowing he's fit and well and see what happens.