On Sunday, one or both of Arsenal and Chelsea will lose their perfect start to the Premier League season.
The Gunners have begun their title defence in very serious fashion.
Mikel Arteta’s men thrashed Coventry City 3-0 at home, before pulling off a narrow 1-0 win at Aston Villa on Monday.
Their first big test of this campaign will come against Chelsea.
Under Xabi Alonso, the Blues have looked amazing in attack and chaotic at the back.
A 3-2 win at Fulham was followed by a 4-3 victory over Brighton at home.
Against the Seagulls, Chelsea recorded just 26% possession and totalled six shots on goal.
In recent years, Arsenal have had the upperhand in this fixture. They have enjoyed three straight wins against Chelsea.
In their last clash, the champions won 2-1 victory at the Emirates Stadium.
The past 10 head-to-head matches have included seven Arsenal wins along with three draws.
A win for either London team will see them keep pace with Manchester City, who edged a 1-0 win over Coventry City on Saturday and sit top of the table with nine points.
So, expect to see a tense, tight and thrilling affair.
Arsenal vs Chelsea: London teams battle to keep pace with Man City