One of the great days on the Australian racing calendar is upon us, with Randwick's traditional spring showpiece in Sydney and a quality-packed Turnbull Stakes day in Melbourne.

The headline act at Flemington will be reigning Turnbull champ and Cox Plate favourite Sir Delius, who will appreciate the rise to 2000m after his fourth in the Makybe Diva Stakes.

There's a triple Group 1 card at Randwick, with the milers duking it out in the Epsom, the stayers going toe to toe in the Metropolitan and the fillies matching motors in the Flight.

You'll find Australia's best form guide for Saturday's Flemington, Randwick, Eagle Farm and Murray Bridge meetings in this week's Best Bets.

On pages 4 and 5 you'll find four-state selections from some of the nation's leading form analysts as well as our popular Black Bookers, Sectional Stars and Video Stars features.

Best Bets ($7) is on sale Thursday morning in NSW newsagents, Friday elsewhere.