A piece of advice from Melbourne's soon-to-be-crowned champion jockey has convinced trainer Stephen Theodore to take a cautious approach to Saturday's Cadell Food Service Handicap at Caulfield.

Theodore's handy galloper Road Trippin' is the topweight with 60kg and ranks among the race favourites.

But he warned that the gelding wouldn't run if the track was any worse than a slow six.

"He definitely won't run if it gets too wet, I've just got my fingers crossed that it will be OK," Theodore said.

Apart from a natural keenness to train a winner, Theodore wants to ease the pain of Road Trippin's last-start defeat when a short-priced favourite at Flemington.

After enjoying a perfect run that had him looking like a winner entering the straight last Saturday, Road Trippin' floundered in the heavy going when jockey Glen Boss called on him and finished sixth.

"Glen said he had five lengths to give at the top of the straight, but he couldn't push the button," the trainer said.

"Every time he was about to go for him he wouldn't let go, there was plenty there but the wheels were spinning.

"Bossy said he still had a good one in him, but he said he shouldn't ever run again on a heavy track.

"I'm prepared to take that sort of advice - but I'm hoping I won't have to."

The Caulfield track was rated a slow six at acceptance time on Wednesday with reasonable weather expected in the lead-up to Saturday's meeting likely to produce a dead five for a program that includes Melbourne's first Group race since the autumn, the Bletchingly Stakes.

In the absence of a standout runner, the favourite for the Bletchingly is likely to be Monash Stakes winner Pago Rock.