Tom Trbojevic scored three tries against Fiji last Sunday night, taking his total to 10 tries in nine Tests.
Despite the hat-trick, the makeshift Australian winger was dissatisfied with his performance.
Fiji five-eighth Kurt Donoghoe repeatedly put Trbojevic in two minds as he attacked Australia's right edge.
Donoghoe set up Semi Valemei's first try with a cutout pass that few established wingers would have stopped.
Trbojevic was caught in-field for Valemei's other two tries.
Donoghoe has given other World Cup teams a possible blueprint for targeting the Kangaroos' right edge, but Trbojevic says he is ready for anything over the next three weeks.