Two times world champions Argentina remains in danger of missing a first World Cup in 47 years.
This after they were held to a goalless draw by Peru in Buenos Aires last night.
Argentina must win their final qualifier in Ecuador on Wednesday to claim at least fifth spot which sets up a two-leg play-off against new Zealand .
Only the top four in South American qualifying are guaranteed a place at the 2018 tournament in Russia, and Argentina are sixth with one game left.
Peru will host fourth-placed Colombia and should they draw, Argentina would be eliminated if they did not win.
Third placed Chile visits the already-qualified Brazil, while Uruguay, who are all-but assured of their place in Russia because of their vastly superior goal difference, need only to avoid defeat at home to already-eliminated Bolivia to guarantee qualification.