The Gunners hosted Mauricio Pochettino's men in North London following a tense 2-2 draw at Stamford Bridge earlier in the season, and emphatic performances had been hard to come by in the past couple of weeks.
Mikel Arteta's attackers were nullified in losses to Aston Villa and Bayern Munich, but the Gunners got back on track with a 2-0 win over Wolverhampton Wanderers at the weekend, albeit one that was not a riveting watch.
Meanwhile, Chelsea had numerous chances to score against Manchester City in their FA Cup semi-final, but profligacy cost them dear in a 1-0 defeat, and Pochettino's side were a class below Arsenal in all departments on Tuesday.
Arsenal did have to fend off a couple of Blues counter-attacks on home turf and survived a couple of scares at the back, but by the end of the night, they revelled in recording a historic victory over their London rivals.
Arsenal post biggest-ever win over ChelseaBy putting five past Chelsea without reply, Arsenal set a new club record for their biggest-ever margin of victory against the Blues, surpassing their 5-1 success in the 1930-31 First Division.
The rout began with Leandro Trossard's fourth-minute strike, which crept in at Djordje Petrovic's near post, although the Gunners squandered a couple of chances to put the game to bed before the break.
Such wastefulness would not come back to haunt Arteta's side, who were in a merciless mood in the second half, where right-back Ben White and ex-Chelsea man Havertz both conjured up braces.
White's composed close-range finish doubled Arsenal's lead before Havertz got on in
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