Jacob Kiraz ran for a match-high 200 metres as Lebanon secured their first win of the tournament in a dramatic finish against France.
Halfback Alex Conti scored Lebanon's opening try and contributed half their points, while earning Player of the Match honours.
Conti recorded 121 metres, a line break, a line-break assist, two try assists, 20 tackles and 334 kicking metres; Abbas Miski scored the winner after charging down a kick in golden point.
Australia beat the Cook Islands 66-6, with Jacob Preston playing all 80 minutes, scoring a try and gaining 152 metres.
Preston also made two line breaks, a line-break assist, a try assist, two offloads and 26 tackles at 89.66 per cent efficiency.
He will meet Stephen Crichton's Samoa in a semi-final at Allianz Stadium, while Crichton's side defeated Tonga 20-18.
Crichton helped prevent Jojo Fifita scoring, then set up Brian To'o with a flick pass; he finished with 101 metres, a try assist, three tackle breaks, two offloads and ten tackles.
Max King's England beat Papua New Guinea 34-12 after leading 24-0 at half-time; King made 136 metres and 15 tackles in 48 minutes.
In the women's competition, Monica Tagoai, Mary-Jane Taito and Leilani Wilson helped Fetu Samoa reach the 2026 semi-finals.
Tagoai ran 186 metres, Wilson made 26 tackles, and Taito completed 20 tackles without a miss in 44 minutes.
Paige Travis scored Wales' only try after a well-weighted grubber from Preston.