Potter is such a terrible manager. He failed on his two opening games, and deserve the sack. He's not good, and out of his depth at a high level of competition like EPL. He shall leave football for the good. I also expect him to be hammered by the hammer(Westham) very soon. 
After the first game of match day two, he is currently the coach I feels like will.be sacked of he doesn't get a point outta their next game.
Aaron Wan Bissaka was poor during that game though yesterday. His is a good 1v1 defender but from what I saw last night? He needs to up his awareness and scanning skills likewise the urgency to react to danger. Congratulations to Chelsea, they've earned their first three points nicely.