I think West Ham is able to cover this handicap. It is not pick for West Ham, but mainly against Chelsea. Somehow I realize Chelsea are in small crisis. First they played only 2:2 with APOEL Nicosia. This result was quickly forgotten as Chelsea was first in the group. After that another draw at home. Chelsea played only 3:3 against Everton. Maybe it is not bad result, but considering Everton was without seven first team players, I think it is a big surprise. At Wednesday Chelsea has many difficulties against last placed Portsmouth (at that time). Even Chelsea lead 1:0 after first half, Portsmouth equilase the result and made many problems to Chelsea players. But, like many times this season, Ancelotti had a luck and Chelsea won 2:1. But I want to say that Chelsea had many problems in last days. The reason for that is probably that the players are tired. Chelsea are going in Premier league, UEFA Champions league, Carling Cup and FA Cup. So, I think the most important for Ancelotti today is to win the game, even with one goal difference. But it wont be easy. Do not forget West Ham played 2:2 with Arsenal after losing 0:2. After that West Ham won against Aston Villa and we must respect that result. Zola team will certainly be boosted by the return of Mark Noble from suspension and Matthew Upson from injury. On other hand Michael Essien and Jose Boingwa remain out, while Joe Cole, Ricardo Carvalho and Florent Malouda are expected to return to the starting line-up as well as Didier Drogba. Anyway, I think that West Ham can upset Chelsea. Bad pitch is also an advantage for West Ham.