The once unfathomable prospect of a World Cup without Lionel Messi and Argentina could become reality tonight as South America's thrilling 2018 qualification battle reaches its climax. Two years after Argentina kicked off their troubled campaign with a 2-0 defeat at home to Ecuador, Jorge Sampaoli's side travel to Quito to face La Tri once more with their hopes hanging precariously. The two-time World Cup-winners head into the final round of games in sixth place overall, outside the top four positions which grant automatic qualification and trailing fifth-placed Peru, who occupy the playoff spot, on goal difference.

Argentina captain Lionel Messi trains ahead of his team’s  World Cup qualifier against Ecuador in Quito tonight. Pic/AFP