Master trainer Chris Waller has described his sixth Cox Plate victory as a "bonus" after champion mare Via Sistina defended her crown in an enthralling instalment of the Australasian weight-for-age championship.
In the historic final race run at Moonee Valley before the famous track is reconfigured, Via Sistina fought off stablemate Buckaroo by a half-head to become the fourth mare in 105 editions of the 2040m classic to go back to back.
