Arsenal's Bukayo Saka, right, celebrates after scoring his side's third goal during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal 3-1 Southampton, Premier League: Gunners Win 400th Home Game - In Pics
Arsenal's 400th home win in the Premier League era was secured only after being given a fright by second-from-bottom Southampton, which took the lead at Emirates Stadium through Cameron Archer 10 minutes into the second half. Bukayo Saka set up goals for Kai Havertz in the 58th and Gabriel Martinelli in the 68th before Southampton twice hit the frame of the goal in search of an equalizer. Saka then put the game beyond doubt with his third goal of the season in the 88th minute.
Arsenal's Riccardo Calafiori, top, and Southampton's Tyler Dibling vie for the ball during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal's Kai Havertz, right, and Southampton's Jan Bednarek vie for the ball during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal's Gabriel Martinelli celebrates after scoring his side's second goal during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal's Kai Havertz celebrates after scoring his side's opening goal during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal's Raheem Sterling is challenged by Southampton's Yukinari Sugawara, right, during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal's Gabriel Jesus is challenged by Southampton's Joe Aribo, right, during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Southampton's goalkeeper Aaron Ramsdale stops a shot by Arsenal's Raheem Sterling during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.
Arsenal's Bukayo Saka, centre, is challenged by Southampton's Ryan Manning, left, and Southampton's Kyle Walker-Peters during the English Premier League soccer match between Arsenal and Southampton at the Emirates Stadium in London.