The big Queenslander believes he has the unbeaten superstar near the best she has been in two years since she won the same race, when she ran down Hay List in one of the more glorious moments of her career.

"It's scary to think that [she can be her best as a six-year-old]. I dare not say she's going any better than she ever has, but she's going every bit as good as she ever has," he said.

"I'm always respectful of the opposition. Facts and figures suggest there's not a horse probably on the planet that can beat her under these conditions at this distance.

"The biggest worry is misfortune and 24 times we've been pretty lucky."

Moody was again at his cheeky best when it was suggested that Sydney jockeys might try to get the better of her from barrier one.

"I think plenty of them have ridden against her before and they're probably still using vaseline to cover up the windburn," he said.

Black Caviar is making what has been built as a farewell tour of Australia after her career looked to be finished because of injuries she suffered winning the Diamond Jubilee at Royal Ascot in June.

But her owners were keen to see Black Caviar on the track and a record-breaking win in the Lightning Stakes in February and another stroll to victory in the William Reid Stakes three weeks ago have her on 14 group 1 wins, the equal of turf great Kingston Town.

She arrived in Sydney in the early hours of Thursday morning and took in her new surroundings at Rosehill for much of the day. If she does what she usually does and wins at Randwick on Saturday, Black Caviar will set an Australian record and move one win from a world record of elite successes. Victory will also take her within one win of the world record for consecutive group 1 wins held by England's unbeaten great Frankel.