Victoria Derby favourite Thinkin’ Big has continued preparations for the $2 million Classic with a course proper gallop at Flemington.

Thinkin’ Big galloped alongside stablemate Shumookh in a hit-out on Tuesday morning with co-trainer Gai Waterhouse watching from the grandstand.

The colt heads into Saturday’s Derby after a dominant win in the Caulfield Classic last start and Waterhouse says the colt is spot-on for the 2500m race.

Credit: AAP