LIVE - Iran 0, Nigeria 0: Oboabona wheeled away wearing cast around ankle (PHOTO)

Nigeria's back line suffered a potentially serious blow in their opening match, as it appears Godfrey Oboabona's tournament could be over.

Oboabona was shown being wheeled down a hallway with a cast on his right ankle and his head hanging low at halftime of Monday's match against Iran.

[Courtesy: CBC]

If Oboabona's injury is serious enough to knock him out of the World Cup, he will join fellow Nigerian defender Uwa Elderson Echiejile, who suffered a muscle tear prior to the start of the tournament.