Tottenham inflicted Arsenal's fourth loss of the Premier League season on Sunday, winning the north London derby 2-1 to give Arsene Wenger a miserable start to his 16th year as Gunners manager.
Rafael van der Vaart put Tottenham in front before half time with the club's 10,000th goal and Kyle Walker netted a 73rd-minute winner after Aaron Ramsey's equalizer for Arsenal.
While Tottenham are sixth in the standings - three points behind fourth-place Newcastle with a game in hand - Arsenal are just two points above the relegation zone.
In a sign that the balance of power might be shifting between the fierce rivals, Tottenham have now won three of the last four league derbies and drawn the other.
Wenger marked 15 years as Arsenal manager on Saturday.