Celtic and Qarabag FK have both failed to score during the first half of their Champions League third-round qualifier in Baku.
The Scottish champions remain 1-0 ahead on aggregate following their narrow triumph in Glasgow last week.
Both sides showed plenty of attacking intent during the opening 45 minutes, but it was the hosts who looked the more likely to make the breakthrough.
The hosts were almost gifted a goal midway through the half when Craig Gordon flapped at a cross, only for Emilio Izaguirre to clear the danger.
Reynaldo fired over the crossbar soon after for Qarabag before Richard Almeida's 20-yard drive was pushed away by Gordon.
While the Scottish champions enjoyed their fair share of the ball, they were unable to produce any clear-cut opportunities before the end of the half. Ronny Deila's men passed and probed around the Qarabag penalty area, but they were severely lacking an incisive touch when they needed it.
Jack Prescott
