THE DATA DAY: ARSENAL V CHELSEA

A tight London derby last night ended goalless, and as the stats suggest, it wasn't just the scoreline that was evenly balanced…

We had 38.6% of the possession at the Emirates - our lowest figure in the league this season - and made 194 fewer passes than Arsenal over the course of the 90 minutes.

Despite that, we still managed more shots than the home side, with four of our 13 attempts on target, while only two of Arsenal's seven efforts tested Petr Cech. Jose Mourinho said afterwards that both sides had one big opportunity, with ours - Frank Lampard's volley that crashed off the underside off the bar - being classed as a shot off target.

The stats would suggest that Lampard was the player most likely to be involved if the deadlock had been broken. Our midfielder had more shots than anyone else, including that brilliant volley, and created more chances than anyone else, three on both counts. He was also heavily involved in the centre midfield battle, making five successful tackles, the same number as Cesar Azpilicueta, a game-high figure.

One of Lampard's shots, a low fizzing drive in the second half, came after Fernando Torres had won a high ball and chested it back into his team-mate's direction. Torres's aerial dominance was a theme of the match, the Spaniard winning seven of his 11 duels in the air, comfortably the most on the pitch. By contrast, Olivier Giroud only won three of his 10 aerial tussles.

Mourinho spoke afterwards of his plan to thwart Mikel Arteta when the Spaniard had possession, limiting his ability to feed the more attacking players. While there is no doubt Arteta was central to Arsenal's play, featuring in all seven of their most frequent pass combinations, the fact that five of those were with his defenders suggests our manager's plan worked.

Petr Cech kept his fifth Premier League clean sheet of the season in north London, taking his overall tally in England's top flight to 150.

The draw was Mourinho's 10th undefeated game against the Gunners, who now haven't beaten us since October 2011.