Australia's right edge looked vulnerable against Fiji, leaving the Broncos centre's place at right centre in doubt after the Kangaroos were given a major scare.
He ran an excellent line for Australia's opening try, but otherwise struggled alongside his teammates on that side.
At fullback, another Kangaroo made a strong case to challenge Reece Walsh for the No. 1 jersey in the tournament's decisive matches.
He set up four tries, contributed to a fifth and made 13 runs for 146 metres, making him Australia's most influential player.
The No. 7 contest also shifted, with one playmaker gaining ground.
The young Dolphin, meanwhile, had a quieter outing after an outstanding Test debut against the Kiwis.
He missed a try-scoring chance and was beaten to a high ball early in the second half, finishing with 14 runs for 141 metres.
Another expected game-changer struggled to make an impact, though opportunities were limited.
He recorded 16 runs for 110 metres, one tackle break and one line-break assist.