Fox News said that the 37-year-old was taken to hospital for a scan to determine the nature and extent of the injury.
Cahill, the all-time record Socceroos scorer, netted a double to ensure Australia defeated Syria in last month's Asian playoff battle, which set up the intercontinental tie for a place in next year's tournament in Russia.
He is due to fly with the Australian squad for the away match against Honduras in San Pedro Sula on Nov. 10 before the second leg in Sydney on Nov. 15.
(Reporting by Hardik Vyas in Bengaluru; Editing by Christian Radnedge)
