Chelsea secured a sixth straight Premier League win to move up to second as the in-form Tammy Abraham and Christian Pulisic struck to beat Crystal Palace 2-0. Abraham ended Palace's dogged defensive resistence with a simple finish from Willian's deft through ball seven minutes into the second half before Pulisic headed home a loose ball 11 minutes from time to seal all three points. Chelsea edge a point clear of Manchester City and to within five of leaders Liverpool, who host City in a highly-anticipated clash on Sunday. A 4-4 draw with Ajax on Tuesday took the tally of goals Chelsea's prior 18 games this season to 70 at an average of nearly four per game. However, the Blues free flowing football under Frank Lampard was met with a brick wall of a Palace defence for the first 45 minutes. Pulisic had scored four goals in his last two Premier League games as the American begins to deliver on his ?58 million ($74 million) price tag and only a fine save from Vicente Guaita denied the USA .