• Manager believes Chelsea match-winner should have got two yellow cards • ‘I’m not happy with the way we played. We can do much better’ Slaven Bilic and his West Ham United players were left bemoaning the reluctance of the referee to dismiss Diego Costa for two bookable offences as the Spain forward scored the late goal that ensured Antonio Conte’s tenure as Chelsea manager began with a morale-boosting win . Anthony Taylor opted not to show Costa…