In the match that ended on late Saturday night, the multi-time Premier League champions conceded a goal by Harvey Barnes, his second, in the 70th minute, which proved to a match-winning strike.
Chelsea head coach Enzo Maresca launched a brutal verdict on his side's shocking defeat against Sunderland in the Premier League and classified the Blues as "not good enough".
Bukayo Saka opened scoring for Arsenal with a fine strike in the ninth minute, though Virgil van Dijk put Liverpool back in the game with an equaliser in 18th minute.
Chelsea manager Enzo Maresca has expressed confidence in the potential of 24-year-old English winger Jadon Sancho, but he expects the player to earn his place through hard work at Cobham Training Centre.
Chelsea head coach Enzo Maresca analysed their 4-1 thrashing by Celtic in the pre-season game and believes that "physical conditioning" played a role in their heavy defeat.
Star Brazilian defender Thiago Silva on Monday confirmed that he will be leaving Chelsea at the end of the ongoing season after playing for the English club for the past four years
This emphatic victory comes just after two losses to Aston Villa and Bayern Munich. Arsenal is also four points clear of defending champions Manchester City, placed in third spot.
Manchester United played out a 1-1 draw against Brentford. After goalless regulation time, Mason Mount, in the sixth minute of stoppage time, hit what could have been the winning goal for United. Kristoffer Ajer finally netted the equaliser, scoring for his side after it had failed to score
Ahead of Manchester City's Premier League (PL) fixture against Brentford on Wednesday, head coach Pep Guardiola said that they want to keep more clean sheets in the league.
City is at number two with 46 points (14 wins, four draws and three losses), just five points short of toppers Liverpool (15 wins, six draws and a loss), who have 51 points.