Bukayo Saka scored one goal and assisted another as Arsenal's strong Premier League form continued with an assured 3-1 victory over Southampton.
Stuart Armstrong's first-time finish from James Ward-Prowse's corner put Southampton ahead after just three minutes at St Mary's Stadium.
Five minutes later, Granit Xhaka's excellent pass picked out Nicolas Pepe, who finished smartly to equalise.
Arsenal went ahead six minutes before half-time when Saka was played in by Alexandre Lacazette and rounded the stranded goalkeeper to score.
Victory was confirmed on 72 minutes as Cedric Soares's raking pass to the right picked out Saka, whose instant cross found Lacazette to convert at the far post.
A fifth win in six league matches sends Arsenal up to eighth on 30 points, a point and three places above Southampton.
See: Southampton report | Arsenal report
Next fixtures
Southampton: 30 Jan v Aston Villa (H)
Arsenal: 30 Jan v Man Utd (H)
Referee: Kevin Friend. Assistants: Simon Beck, Eddie Smart. Fourth official: Keith Stroud. VAR: Robert Jones. Assistant VAR: Stephen Child.
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