Jose Mourinho's men share a run of five consecutive league victories with leaders Arsenal, while second-placed Manchester City have won seven in a row, meaning just two points separate the sides in the race for the title.Chelsea should be full of confidence ahead of Wednesday's meeting with a West Ham side who have just one win from their last nine fixtures in all competitions.The men from East London have not won at Stamford Bridge since 2002, losing seven of the past eight encounters, and suffered a 3-0 reverse when the sides met at Upton Park in November.