Petracca will be keen to impress over the four days of testing at Etihad Stadium from September 30 - October 3 .
Petracca stamped his authority as a contender for the No. 1 position with a standout NAB AFL Under - 18 Championships .
Petracca , who stamped his authority as a contender for the No. 1 position with a standout NAB AFL Under - 18 Championships , will be keen to impress over the four days of testing at Etihad Stadium from September 30 - October 3 .