Saka capped a fine display with a brilliant assist for Arsenal’s second goal scored by Nicolas Pepe.
He beat his marker from the left with a superb nutmeg before laying a low cross for Pepe to slot home.
It was his second assist for Arsenal in the Premier League this season.
The win took Arsenal to 10th position on 34 points, seven points adrift of Chelsea in fourth.
It was their second league win under Mikel Arteta following a 2-0 win against Manchester United on New Year’s Day.
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