Arsenal battled to a superb 1-0 Champions League victory over Borussia Dortmund as a second half goal from Aaron Ramsey proved enough to take all three points away from the Germans' Westfalenstadion fortress. Dortmund had come into the Group F encounter searching for an eighth successive home Champions League win and had never lost against English opposition. Jurgen Klopp's well-drilled side, who had won 2-1 in London a fortnight ago, dominated for long spells, but were made to pay for not converting their chances when Ramsey nodded home a knockdown from Olivier Giroud on 62 minutes. It may not have been the flowing display which manager Arsene Wenger would have preferred - but the Barclays Premier League leaders once again answered questions with a display of real character to hand a rare defeat to last season's beaten finalists. With Napoli beating Marseille, Arsenal still have work to do to secure safe passage through to the knockout stages, but will have gained more belief they can last the distance this season.
Samuel Eto'o scored twice as Chelsea took another step towards a place in the knockout stages with a 3-0 victory over Schalke in Group E. In the absence of leg injury victim Fernando Torres, who scored twice in the 3-0 win in Gelsenkirchen two weeks ago, Eto'o stepped up as the 2012 European Champions moved on to nine points, three clear of nearest rivals Schalke in the standings with two games to play. Responding to Saturday's loss at Newcastle which ended a six-match winning run, Jose Mourinho made six changes as Chelsea returned to Stamford Bridge in the Champions League for the first time since September's loss to Basle, when they relinquished their near-10-year, 29-match unbeaten home run in the group stages of Europe's elite competition.
Celtic's Champions League hopes are hanging by a thread after they slumped to the bottom of Group H with a 1-0 defeat by Ajax at the Amsterdam Arena. Lasse Schone, who had scored after coming on as substitute in the 2-1 defeat at Celtic Park, grabbed the winner with a well-taken goal in the 51st minute to sink the Scottish champions who were far from their best in what was a mostly scrappy game. Hoops keeper Fraser Forster strengthened his claim for an England cap with two good saves in the first-half which was bereft of quality and in which Neil Lennon's men hardly threatened. The game opened up after the break. Schone struck just after Celtic midfielder Beram Kayal had missed a good chance for the visitors and before Anthony Stokes failed with a good opportunity to level. Celtic, whose Dutch defender Virgil van Dijk was immense, remain on three points with two fixtures remaining. Ajax move above them on four points with Barcelona having qualified following their 3-1 win over AC Milan at the Nou Camp.
