Opie Bosson has taken on a weighty summer mission and he's confident of executing it.
The top jockey has a constant battle with the scales, but the lure of winning New Zealand's richest two-year-old race at Ellerslie on Saturday week will have him leaner than ever.
"We've got five horses qualified for the Karaka Million and Opie has chosen Avantage," Te Akau principal David Ellis said.
"I said to him do you think you can do 54.5kg and he said I'll do it easily."
On Sunday, Bosson was successful aboard the Stephen Autridge and Jamie Richards-trained Avantage when the Fastnet Rock filly stretched her unbeaten run to three after earlier victories at Riccarton.