Arsenal have suffered their second consecutive defeat in pre-season, this time to Borussia Dortmund. Arsenal continued to look good on the ball, but Dortmund struck again and doubled their lead. Here are our player ratings from the game…Arsenal lose again! Back-to-back defeats for the Gunners Credit: Getty Images/CARLOS JASSO / AFPArsenal player ratings vs Borussia DortmundKepa Arrizabalaga: 5.5/10No howlers today from Kepa Arrizabalaga, and to be fair to him, he had no chance of saving either of Dortmund’s first-half strikes. But the Italian lost the ball that led to Dortmund’s second goal, and that should not have happened.