Drogba had just put the Ivorians ahead when he was injured in a 15th-minute clash with Japan central defender Tulio and left the field clutching his right arm.

Unconfirmed reports from Switzerland suggest the Chelsea star has fractured his elbow, an injury which would force him out of the World Cup.

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Drogba was in sparkling form for Chelsea last season, playing a pivotal role as Carlo Ancelotti's men landed the Barclays Premier League and FA Cup double.

His absence in South Africa would seriously hinder his side's chances of qualifying from Group G which also contains Brazil, North Korea and Portugal.

Ivory Coast won the game 2-0 with Manchester City defender Kolo Toure adding a late second for the Elephants.