Enzo Maresca's style is exposed in first game in charge, but Chelsea already look better in one key area and Levi Colwill shows some fight: FIVE THINGS WE LEARNED as Blues can only draw with League One Wrexham

KIERAN GILL AT LEVI'S STADIUM IN SANTA CLARA - Enzo Maresca's debut as Chelsea's head coach served as a wakeup call for anyone who thought it would be easy.