Chelsea maintained their unbeaten start to the season and went one point clear at the top of Premier League 2 Division 1 with a 1-1 draw at Wolverhampton Wanderers.
An own goal from Marc Guehi put Wolves ahead but Valentino Livramento levelled shortly after the half-hour at the Jack Hayward Training Ground.
Neither side were able to find a breakthrough in the second half so Chelsea went a point ahead of Derby County on 22 points, while Wolves remain 10th on 10 points.
See: Chelsea report
John-Jules strikes for Arsenal
Tyreece John-Jules scored the only goal as Arsenal beat Southampton 1-0 at Borehamwood.
The forward also had a second-half penalty saved by Southampton goalkeeper Tommy Scott, but a first clean sheet of the campaign earned Arsenal the three points to stay third in D1 on 22 points.
Southampton remain bottom on seven points.