's Nick Teale uses the Bettorlogic Form Lab to analyse the statistics ahead of Sunday's game.

Arsenal travel to Anfield this weekend to take on an out-of-form Liverpool. But a win for the Reds would see them creep back to within a point of the Gunners.
The bad news for Arsène Wenger's side is that over the last five seasons, home advantage has proved key in this fixture.
The last five Premier League games between these sides at Emirates Stadium have seen two draws and three Arsenal victories. At Anfield, Liverpool have won three of the last five league games with the previous two fixtures ending all-square.
However, Arsenal do know how to beat Benitez' Liverpool at Anfield - the Gunners won twice at Anfield in 2007, knocking the Reds out of the FA Cup and Carling Cup within the space of a week.
Since the Spanish manager arrived on Merseyside, 'Big Four' games at Anfield have tended to be tight affairs.
Liverpool concede an average of 1.06 goals in such games while scoring 1.38 goals per game; a significant drop on their overall home record of 2.03 strikes per game under Benitez.

For the Gunners Alex Song appears to be a key figure in away games against the 'Big Four'. He has played five such Premier League games since the summer of 2004. In that time the Club has played 16 away games against the 'Big Four', scoring an average of 0.88 goals per game. But with Song in the side, Arsenal have scored 1.6 goals per game, an 83 per cent improvement on the team average.
Remarkably, when Steven Gerrard plays for Liverpool against 'Big Four' clubs at Anfield, the Reds score fewer goals.
Under Benitez the Merseysiders have bagged 1.38 goals per game at home to 'Big Four' clubs but with Gerrard in the line-up, Liverpool net just 0.83 goals per game.
However, that stat may be masked by the fact Gerrard missed the 4-4 draw with Arsenal last season and his side's 4-1 triumph over the Gunners in March 2007.

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10 Dec 2009