SOUTH Australian Jack Lukosius starred for South Australian in the opening game of the NAB AFL Under Championships in Adelaide on Sunday, showing why he could be taken at No.1 in this year's NAB AFL Draft.

The precocious talent booted four goals, took 14 marks and gathered 17 disposals in his side's 89-point thrashing of Western Australia.

South Australian captain Luke Valente was instrumental for his side, particularly in the first half. He finished with 26 disposals, seven clearances, five inside 50s and a goal.

Jackson Hately was the other dominant midfielder for the Croweaters.

The 190cm Hately racked up 28 touches, laid six tackles, and had 10 clearances, five inside 50s and a goal.

Ben Jarvis (17 disposals and three goals) proved a handful, while Izak Rankine (14 possessions and a goal) showed glimpses of brilliance.

Ruckman Luke Jackson was clearly the best for Western Australia, and his second efforts and follow-up work were a real highlight.

Jackson finished with 29 hit-outs, 15 touches and five clearances.

Luke English (25 disposals, six tackles, five clearances, seven inside 50s and a goal) and Damon Greaves (23 possessions and three rebound 50s) were also good for the Black Swans.

The U18 Championships continue next week, with the Allies hosting Vic Country and Spotless Stadium on Saturday, before Western Australia welcomes Vic Metro to Optus Stadium on Sunday.

South Australia 5.3 9.4 14.8 19.10 (124)

Western Australia 1.1 3.3 5.4 5.5 (35)

GOALS

South Australia: Lukosius 4, Munn 4, Jarvis 3, Chapman 2, Tarca, Hately, Valente, Nietschke, Rankine, Sampson

Western Australia: Moore 2, English, Clark, Hill

BEST

South Australia: Lukosius, Valente, Jarvis, Lewis, Hately, Gould

Western Australia: Jackson, English, Greaves, Sturrock, Spooner