Arsenal delivered a sensational performance to thrash London rivals Chelsea at the Emirates Stadium, to move three points clear at the top of the Premier League. The Gunners were dominant throughout, aside from occasional Chelsea chances on the counter-attack in the first half, but still went into the break with a surprising 1-0 lead given the opportunities they had to extend it. However, they were emphatic in the second half, and braces from former Chelsea star Kai Havertz, and right-back Ben White secured a 5-0 win, and it could have even been more as Fabio Vieira and Gabriel Martinelli came…