Arsenal manager Unai Emery was left frustrated by his side's lack of cutting edge in their 2-0 EFL Cup defeat to bitter rivals Tottenham on Wednesday night.
Goals from Son Heung-min and Dele Alli saw Arsenal succumb to their second defeat in a week after previously going on a 22-game unbeaten run in all competitions.
Speaking to Sky Sports (via football365) after the game, Emery explained: "I think we worked like we want, like we prepared. We created chances in the first half to score but our efficiency wasn’t good for us.
"We didn’t concede a lot for them, but they have quality and they scored.