Argentina came from behind to draw 1-1 with Venezuela at home today, a result that leaves the 2014 losing finalists a long way from guaranteeing their place in Russia next year.
The hosts had won all six of their previous home qualifiers against Venezuela and were expected to do the same against the team at the bottom of the South American group and without a win in 10 games.
But Argentina's failure to take all three points left them fifth in the standings with two matches remaining - out of the top four spots which brings direct qualification for the finals.
The fifth-placed South American side will go into an intercontinental playoff against New Zealand, after the All Whites sealed their place with an 8-3 aggregate win over the Solomon Island.