English football champions Manchester City stand on the verge of a second successive group-phase exit from the Champions League after a 2-2 draw at home to Ajax Amsterdam.
City now have two points from four games and even if they win their last two matches they may not get through.
Arsenal drew 2-2 with Schalke to remain just a point behind the Germans at the top of their group.
Real Madrid's hopes of qualification remain alive after also drawing 2-2 at home to another German side, the champions Borussia Dortmund.
Porto and debutants Malaga became the first teams to reach the last 16.
