Arsenal were made to pay for their profligacy in front of goal after being held to a goalless draw by Burnley at Turf Moor.
Pierre-Emerick Aubameyang returned from suspension following his red card against Crystal Palace and started up front, with Mesut Ozil making his 250th appearance for the Gunners.
And it was Aubameyang who created the first chance of the game inside two minutes, crossing for Alexandre Lacazette who was waiting on the six-yard box only to glance his header wide.
On the quarter-hour mark, it was Aubameyang's turn to have a pop at goal but the striker, put through on goal after a superb pass from David Luiz, somehow dragged his shot wide.
After Arsenal's bright start, Burnley began to create chances themselves with Jay Rodriguez forcing Bernd Leno into a decent stop from 20 yards out.
Aubameyang showed good intiative to make a run in behind and Xhaka found him, but Burnley goalkeeper Nick Pope came quickly off his line to block the 30-year-old's lob attempt.
Arsenal's injury problems at left-back worsened when makeshift full-back Bukayo Saka came off at the break, forcing Granit Xhaka to deputise in defence.
Burnley came bursting out of the blocks in the second half and looked desperate to get the opener, with Tarkowski going close with a header from an Ashley Westwood delivery.
Minutes later, Jeff Hendrick really should have put the home side ahead when Dwight McNeil curled in a deep cross and the Ireland international headed wide, having beaten Xhaka to the punch.
Ozil's milestone appearance lasted just 63 minutes as Arteta sent on Joe Willock to spark his side into life but the Gunners struggled to carve out a chance. That was until Lacazette curled in a cross for Aubameyang and the 14-goal striker, with the goal at his mercy, headed wide.
Then it was Burnley's chance to go ahead. Chris Wood headed down a high ball towards Rodriguez and from close range, the striker hit the underside of the bar. Goal-line technology ruled that the ball had not crossed the line and Arsenal escaped again.
Arteta sent on Eddie Nketiah for Lacazette with only two minutes of normal time remaining chasing a winning goal, but the Gunners failed to muster an opportunity as they stuttered to a fourth consecutive draw in the league.
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