The Spurs boss wasn't too pleased after a missed call awarded Arsenal a corner kick, followed by a goal, to spark the Gunners' north London derby comeback.
Heung-Min Son gave Tottenham the lead against the run of play but Dominic Solankes own goal and Leandro Trossards strike turned it around as Arsenal narrowed the gap on Premier League leaders Liverpool;
Ange Postecoglou bemoaned Tottenham's loss record after they fell to another North London derby defeat, calling their 11 defeats this season "unacceptable".
Tottenham boss Ange Postecoglou knows how much the north London derby against Arsenal means to the club.
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Tottenham manager Ange Postecoglou has explained his bold double substitution at half-time against Arsenal was in response to a poor opening 45 minutes. Spurs took the lead, slightly against the run of play, in the north London derby when Heung-min Son's deflected effort found the bottom corner to stun the majority inside the Emirates Stadium.
Tottenham manager Ange Postecoglou says their Premier League match against Arsenal is "not just another game" as they fight for "turf" at the Emirates Stadium.
Spurs are closer to the bottom three than the top four after another defeat and Postecoglou did not hold back in his post-match comments
Spurs' poor derby ... north London Derby on Wednesday night. The result leaves them closer to the relegation zone than the top four – things are going from bad to worse for Tottenham and Ange ...
Tottenham manager Ange Postecoglou has branded his side's performance against Arsenal "not acceptable" and admits the "responsibility lies with me" for their 2-1 defeat
Ange Postecoglou is coming under pressure after the North London Derby defeat to Arsenal left Tottenham sitting just eight points above the Premier League's relegation zone
ARSENAL host Tottenham this evening in what is set to be a mouthwatering North London derby. The Gunners will be desperate to resurrect their spluttering title chase, following devastating cup