Mauricio Pochettino is confident Chelsea will improve quickly despite an alarming 3-1 defeat at 10-man West Ham.The Blues were the better side but James Ward-Prowse, making his Hammers debut, created goals for Nayef Aguerd and Michail Antonio, either side of Carney Chukwuemeka's equaliser.Enzo Fernandez had a penalty saved by Alphonse Areola and West Ham had to play the final 25 minutes a player down after Aguerd saw red.

Mauricio Pochettino is confident Chelsea will improve quickly despite an alarming 3-1 defeat at 10-man West Ham.The Blues were the better side but James Ward-Prowse, making his Hammers debut, created goals for Nayef Aguerd and Michail Antonio, either side of Carney Chukwuemeka's equaliser.Enzo Fernandez had a penalty saved by Alphonse Areola and West Ham had to play the final 25 minutes a player down after Aguerd saw red.