Christopher Nkunku scored a wonderful solo goal from a Jadon Sancho assist and the duo will be hoping to start against the Hammers at the London Stadium tomorrow afternoon.
Ahead of the game, Maresca has provided a boost by confirming that Fernandez and Dewsbury-Hall are in contention for the derby after recovering from their respective illnesses.
Chelsea are currently eighth in the standings with seven points on the board and will be aiming to climb up the table with a victory over the Hammers.
The London Stadium has not been a happy hunting ground for the Blues over the years and they face a tough challenge on their hands once more.