's Nick Teale uses the Bettorlogic form lab to analyse the statistics ahead of Wednesday's Premier League clash.

Victory over Liverpool in their last home game gave Portsmouth a merry Christmas but defeat at West Ham on Boxing Day left Avram Grant's side rooted to the bottom of the Premier League.
Last season they survived by seven points and that was largely down to their home form with 27 of their 41 points being collected at Fratton Park.
It's been a similar story this season, however Pompey supporters will be far from pleased with the nine points amassed at home and the five picked up on their travels.
But one player who certainly appears crucial to the south-coast side's fortunes is midfielder Hassan Yebda. All 14 of Portsmouth's points have been picked up in the eight games he has started. They've lost every other game since he joined the club on-loan from Benfica at the end of the summer transfer window.
However the opposite rule applies for South African midfielder Aaron Mokoena. Portsmouth have lost 10 of the 11 games he has started and 13 of their 14 points have come in the games he has missed.
For Arsenal, a string of players likely to be in the squad on Wednesday night have never suffered defeat against a team coming into the match in the Premier League's bottom six.
Among them is Eduardo. He has started seven such games, Andrey Arshavin eight, Samir Nasri nine and Theo Walcott 13.
Will that trend continue in Arsenal's final game of the decade?

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29 Dec 2009