Laurent Koscielny scored a late equaliser as Arsenal came from behind to snatch a well-earned point from a breathless encounter with Manchester City.
The Frenchman found the net nine minutes from time, thumping in from close range after the champions had failed to clear the danger from a corner.
City had taken a scarcely deserved lead when Joleon Lescott headed in David Silva's corner five minutes before the break.
But Arsenal kept going to salvage a point from a match that maintains both clubs' unbeaten starts to the season and leaves them locked together on eight points from five matches.
City manager Roberto Mancini cut a fraught and frustrated figure throughout the game, as City once again failed to recreate the attacking fluency that became their trademark in the early months of last season.