Arsenal suffered a 3-2 defeat to Borussia Dortmund at the Emirates Stadium on Sunday afternoon, despite an improved second-half performance from Mikel Arteta’s side. The Emirates Cup clash marked the Gunners’ return home during pre-season, with Christos Tzolis making his Emirates debut and Viktor Gyökeres leading the attack. Dortmund punish Arsenal before the breakArsenal actually produced some promising attacking moments during the opening stages, with Kai Havertz and Gyökeres linking up well. The visitors opened the scoring after just six minutes before adding their second in the 29th minute, leaving Arsenal 2-0 behind at half-time. Dortmund scored from a corner in the 57th minute to make it 3-0, leaving the Gunners facing a mountain to climb.