Which two-year-olds of last season will kick on at three? It's always an intriguing question and we'll start to get some answers with the running of the Vain and Quezette Stakes at Caulfield and the Rosebud at Rosehill. The resuming colts and geldings in the Vain will have to get past impressive recent Valley winner Alpha One, whose Caulfield run may be his last in Australia, with Hong Kong calling.

The main event at Caulfield is the Group 2 P.B. Lawrence Stakes, which will see the return of several stars under weight-for-age conditions.

Meanwhile it's Spring Stakes day at Morphettville.

You'll find Australia's best form guides for Saturday's Caulfield, Rosehill, Eagle Farm and Morphettville 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 ($6.50) is on sale Thursday morning in NSW newsagents, Friday elsewhere.