North Adelaide midfielder Jack Graham has been named captain of SA’s Under 18 side for this year’s AFL National Championships.

Graham, 18, is a strongly-built inside midfielder who made his League debut with the Roosters last year. He is the son of former West Torrens player Jeff Graham.

Glenelg midfielder Jonty Scharenberg, who also made his League debut in 2015, will be vice-captain.

He is the younger brother of Collingwood’s Matthew Scharenberg, who was selected at pick six at the 2013 national draft.

South Australia will open its 2016 U18 campaign against the Alllies at Football Park on Saturday.