It was a case of out with the old in with the new on Saturday at Flemington, with youngsters taking out both Group 1 features in sweltering conditions.

Three year old Super Cool gave trainer Mark Kavanagh a memorable Group 1 victory, taking out the Australian Cup against classy older gallopers including Green Moon, Glass Harmonium and Tanby.

And it was another three year old, Fiveandahalfstar, that made up the quinella, pinching a lead down the straight before Super Cool ran him down in the final stages, winning by a short head.

The same horses quinellad the Victorian Derby last Spring, but this time, the order was reversed, much to the delight of Kav.

"To get a three-year-old to win at weight-for-age ... it's full credit to the horse."

In Australia's biggest sprint race, it was again a three year old taking the money, with Shamexpress surprising his more fancied rivals in the 1200m Newmarket Handicap.

With no Black Caviar in the field, horses like Moment of Change and Barakey were expected to prove too good, but the Danny O'Brien trained Shamexpress charged home late to win a close up finish ahead of outsider Aeronautical and favourite Moment of Change.

"It has been a long range plan since the horse ran third here in the Coolmore in the spring. He's a great talent and deserved the win," O'Brien said after the race.

In other races, Flying Snitzel shocked the field to win the Group 2 Kewney Stakes for Gerald Ryan, and early Melbourne Cup favourite Puissance De Lune deadheated with Budriguez in the Group 2 Blamey Stakes.

Puissance De Lune was held up at a crucial stage and flew home to be unlucky to not win outright. He lost no admirers though, and his odds actually shortened for the big race in 8 months time.