Mikel Arteta watched his Arsenal team return to the top of the Premier League table with victory over Chelsea before insisting he would not let his players' heads drop.
The Gunners were eight points clear last month but had fallen behind Manchester City following a run of four winless game - a streak that ended with a comfortable 3-1 win over the beleaguered Blues.
Captain Martin Odegaard scored twice before Gabriel Jesus wrapped up the win before half-time as Noni Madueke's first league goal proved a mere consolation for Frank Lampard's visitors.