Spurs have now lost four of their last five league games
Arsenal have the North London bragging rights after they came from behind to beat Tottenham 2-1.
The win has moved Mikel Arteta's team to within four points of Premier League leaders Liverpool.
Spurs have now lost four of their last five league games.
Tottenham boss Ange Postecoglou says there's "no magic cure" to their poor Premier League form.
Meanwhile, Newcastle beat Wolves 3-nil to move up to fourth.
Aston Villa were 1-nil winners at Everton and Crystal Palace beat Leicester 2-nil.