LONDON: Manchester City were left with a healthy eight-point lead at the top of the Premier League after second-placed Manchester United suffered a 1-0 loss away to champions Chelsea hours after the leaders saw off Arsenal 3-1 on Sunday (Monday in Manila). United manager Jose Mourinho, a former title-winning boss with Chelsea, saw his latest visit to Stamford Bridge end in defeat courtesy of Alvaro Morata’s 55th-minute header that ended a run of six games without a goal for the Spain striker. Victory left Chelsea fourth, nine points off the summit. It was a much-needed win for Chelsea and under-pressure manager Antonio Conte following their midweek Champions League loss away to Roma. Conte and Mourinho’s already tense relationship showed no signs of improving after the Chelsea boss ignored his United counterpart for the traditional post-match handshake between managers. “It’s not important. You have to have the respect on the pitch not outside the pitch,” Conte, who at full-time raced onto the pitch to celebrate with his players, told Sky Sports. Mourinho, twice sacked by Chelsea despite winning the English title three times, insisted he had done all he could to observe the formalities after his third successive defeat at Stamford…