Alexis Sanchez is set to miss Chile's Confederations Cup opener against Cameroon on Sunday, although the Copa America winners will give the Arsenal star every opportunity to recover from an ankle injury.
Sanchez skipped training prior to the clash with the African champions in Moscow and is unlikely to start Chile's first game of the tournament.
Coach Juan Antonio Pizzi said: "Alexis had some health troubles a couple of days ago and, on Friday, we decided we would let him rest.
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"We will introduce him slowly so he can maybe join us later.