Chelsea manager Mauricio Pochettino cut a frustrated figure after the Blues' 3-1 loss at West Ham on Sunday, but says it is 'only the beginning' for his side.
The Hammers took the lead through Nayef Aguerd after seven minutes at the London Stadium, but Chelsea looked to be on their way to a win as Carney Chukwuemeka levelled later in the half and the Blues won a penalty shortly before the interval.
