Marcos Rojo was the unlikely hero as Argentina somehow secured their place in the knockout stages of the World Cup.
Jorge Sampaoli's side were heading out of the tournament without a win until Rojo scored a stunning right-footed volley four minutes from time.
Rojo's strike sees Argentina take Nigeria's place in the last 16 and set up a showdown with France on Saturday.
Lionel Messi secured the perfect start in Rostov as he scored his first goal in Russia.
The Barcelona superstar collected a fine pass from Ever Banega with his thigh before firing into the top corner past Nigerian goalkeeper Francis Uzoho.