London: Chelsea ruined Arsenal manager Mikel Arteta's home debut as Tammy Abraham's late strike sealed a dramatic 2-1 win after Bernd Leno's horrific blunder turned the tide in a thrilling London derby on Sunday.

Leading through Pierre-Emerick Aubameyang's early goal at the Emirates Stadium, Arteta was just seven minutes away from securing his first victory in his second game in charge. But Gunners goalkeeper Leno made a hash of coming to catch a free-kick and Jorginho tapped in to spark a Chelsea fightback that climaxed in Abraham firing home with three minutes left.