To underline the urgency of their quest, the Hammers have the worst scoring record in the top flight, with just 18 goals in 21 League games.
Leeds, meanwhile, have won only two Premiership matches away from home this season. Their manager, George Graham, said: "That is not good enough. We have some catching up to do." Tony Yeboah and Tony Dorigo are both out injured.
Mick Tait has resigned as Hartlepool United's manager just three weeks after being given the job. He has quit over plans by the Third Division club to save money by scrapping their youth policy, but wants to continue as a player. The Dover manager, Joe O'Sullivan, has also resigned, following the FA Trophy defeat by Dagenham and Redbridge.