Charlie Brown scored twice as leaders Chelsea beat Arsenal 3-1 on a night when they became the only unbeaten team in Premier League 2 Division 1 this season.
Forward Brown put the Blues ahead on 17 minutes, collecting a pass from Thierno Ballo and striking in his first PL2 goal of the campaign.
Just after the half-hour mark, hosts Chelsea doubled their lead as midfielder Clinton Mola hit a volley past goalkeeper Karl Hein.
Arsenal pulled a goal back before the break when Ben Cottrell finished from close range after Jamie Cumming had denied PL2 top scorer Folarin Balogun.
But Brown headed in his second on 56 minutes from a Billy Gilmour pass to keep Chelsea top, a point above Derby County who on Friday ended defending champions Everton's unbeaten start.
The Gunners also suffered their first defeat and are fourth, five points off the pace.
See: Chelsea report | Arsenal report
Next fixtures
Chelsea: 26 Oct v Everton (A)
Arsenal: 26 Oct v Man City (A)