"Barrier 10 might look a bit wide to some people but with the rain forecast for the next two days and the fact we don't have much wind, I think the track could have give in it.
"That would aid him because he has proven he can handle wetter tracks but even more importantly some of the others will struggle if it gets wet.
"And if the inside does cut up at all by that stage of the day, being able to sit outside the leader and pick maybe a better line.
"It is a super race, we all know that, but I don't think any horse in it has had a better preparation than he has," McDonald added.
With the Randwick track rated a soft6 yesterday and rain forecast it could downgrade into the 7 or even 8 range and that would see punters swing toward Nature Strip, although defending champion Classique Legend has good soft track form.
Another New Zealand interest in the mega money dash for cash is Lost And Running, who is by Little Avondale stallion Per Incanto, who is leading sire in Hong Kong but would receive an enormous boost should Lost And Running perform on the biggest stage tomorrow.
McDonald rates Ahead Start (R3, No2) as his best chance tomorrow.