Waller wildcard up to Cox Plate challenge

Chris Waller has his sights set on a fifth Cox Plate triumph with talented import El Bodegon. (Mark Evans/AAP PHOTOS) (AAP)

Champion jockey Damien Oliver will put his trust in the world's blue-chip middle-distance form to counter any perceived physical impediment to El Bodegon winning the WS Cox Plate.

Despite having the nous of four-time Cox Plate-winning trainer Chris Waller in his corner, El Bodegon is rated an unknown factor in the race billed as Australia's weight-for-age championship.