In Fabiański's early Arsenal career, two of his most notable appearances came in the 5–1 defeat to rivals Tottenham Hotspur in the 2007–08 League Cup semi-final and the first leg of the 2009–10 UEFA Champions League second round match with Porto. Fabiański received criticism for conceding soft goals in the Porto match as he scored an own goal and was blamed for the second goal after picking up a backpass from Sol Campbell, with Porto scoring from the resulting free-kick. In January 2010, Arsène Wenger stated that Łukasz Fabiański could become one of the best goalkeepers in the Premier League.