Argentina midfielder Manuel Lanzini is set to miss out on the World Cup after suffering a ruptured anterior knee ligament injury in training.
The West Ham star has worked his way into the Albiceleste's first choice team under Jorge Sampaoli and was set to start against Iceland in his country's opening match in Russia.
But he now faces a long spell on the sidelines as Argentina's preparations for the tournament go from bad to worse.
Having only just scraped into the tournament in Russia thanks to a Lionel Messi-inspired win over Ecuador in their final qualifying match, the two-time winners have been one of the most talked about nations in the build-up for all the wrong reasons.