By Sean Walsh FROM STAMFORD BRIDGE – Enzo Maresca earned his first win as Chelsea head coach with a 1-0 victory over Servette in the first leg of their UEFA Conference League play-off. The Blues have the advantage heading into next week’s second leg in Switzerland, with a place in the group stages up for grabs. A Christopher Nkunku penalty just after half-time and a thumping strike from Noni Madueke ensured the west Londoners were triumphant on Thursday night. How the game unfoldedChelsea should have been ahead inside 90 seconds. Kiernan Dewsbury-Hall won possession high up the pitch and slipp…