Arsenal have moved to the top of the Premier League standings, following an unconvincing scoreless draw with Middlesbrough at home, which saw their 7-game winning run come to an end.
The gunners dominated the match from the onset, while their goalie Petr Cech produced a fine save in the first half to deny the visitors.
The hosts were again the better side after the break, but a diligent Middlesbrough, defended with Tenacity and concentration.
The keeper Victor Valdes made a superb save to keep out Alexis Sanchez's dipping effort before Mesut Ozil had a late goal disallowed for offside, and the visitors held-on to bag a well-deserved point at the Emirates Stadium.