On Wednesday, Arsenal beat Chelsea 4-2 at Stamford Bridge in a Premier League encounter that seemed more like a skirmish at moments.
The Gunners led three times before securing a much-needed victory against their London rivals, with an exciting first half setting the tone for the remainder of the game.
Arsenal took the lead via Eddie Nketiah in the 13th minute, only for Timo Werner to equalize four minutes later.
Emile Smith Rowe scored in a counterattack in the 27th minute, followed by César Azpilicueta's tap-in five minutes later.
After a goal-filled opening 45 minutes, Nketiah scored his second of the night shortly before the hour mark to put Arsenal ahead for good.
With the visitors under pressure, the Blues began to look for an equalizer.
Sadly for the hosts, a Bukayo Saka penalty kick in stoppage time put the game out of reach.
Arsenal now has the same record as North London rivals Tottenham, 18-3-11.
Spurs have the tiebreaker for fourth place, thus Arsenal will need to win six more games to qualify for the Champions League.