Arsene Wenger should've signed a holding midfielder
Mathieu Flamini may not have started the game, but when Mikel Arteta was taken off injured, the Gunners were found wanting once again. Flamini was caught in possession for Spurs' goal and offered little protection for his defenders when Tottenham broke. Wenger should have seen this coming in the summer - as many fans did - and should be looking for reinforcements in January.
Mesut Ozil may well be back - finally
Mesut Ozil's time with Arsenal has been a frustrating one. Despite starting well after his £42.5m move from Real Madrid just over a year ago, the German endured a tough second half of the season and hadn't impressed this term before last weekend's game against Aston Villa. Yet a goal against Villa seems to have reinvigorated Ozil, who was influential tonight, pulling the strings behind Danny Welbeck.
Kieran Gibbs is far, far, far and away Arsenal's best left back
The England international has been out injured recently, which gave Nacho Monreal the chance to impress in his absence. The Spaniard didn't take it, and the gulf in class between the two players was evident for all to see tonight, as Gibbs got up and down the left flank, contributing both defensively and in attack as he continues to be one of the most underrated players in the Premier League.
What has happened to Aaron Ramsey?
The Welshman was outstanding last season and even had a bright start to his campaign too, but in recent weeks he seems to have taken a step back again. Ramsey wasn't his usual self tonight, failing to break into the box and test the goalkeeper as he has been over the last year. He's now injured again, and Arsenal fans have to be worried that the former Cardiff man is slipping back towards his previous self.
The North London derby is still one of the best in England
We had the Merseyside derby earlier today, but this rivalry is more fierce than that. There was genuine passion on show from players, supports and even the managers in an absorbing contest at the Emirates Stadium, with both teams contributing to an excellent encounter - even if it didn't end 4-4 this time.