The United States moved a step closer to qualification for the 2008 World Cup by beating Atlantic Group rivals Japan 54-18 in Aston, Delaware on Saturday.
The win puts the US into next year's repechage round, along with Samoa.
Lebanon got their World Cup qualifying campaign off to a winning start with a 22-8 defeat of Group Two rivals Russia.
Winger Adham El Zbaibieh scored two tries at London's New River Stadium for the Cedars, who face Ireland at Dublin's Tolka Park on 5 November.
The Irish already have one win under their belt after crushing Russia 50-12 in Moscow earlier this month.
The top team in Group Two win a place in the finals, with the runners-up going into the repechage.
Greece, captained by Salford's Michael Korkidas, beat Serbia 44-26 in Athens in the first rugby league international to be played on Greek soil.
Serbian captain Radoslav Novakovic was sent off by Super League referee Phil Bentham for misconduct.