Spoils shared in Old Firm derby
Celtic dropped its first points of the Scottish Premiership season after a 0-0 draw with Old Firm rival Rangers at Ibrox.
Nothing could separate the sides in a generally low-key Glasgow derby, with the host recording its fourth successive stalemate of the campaign.
Rangers thought they had taken the lead in the 31st minute when John Souttar headed home from James Tavernier's free-kick, but the goal was ruled out for offside after a VAR review.
Both teams were seeking a positive response after missing out on Champions League qualification defeats in the play-off round earlier this week.
However, neither could really generate too much of an attacking threat.
Kieran Tierney sent an acrobatic attempt straight at Jack Butland in the 56th minute, but that was the closest either side went to grabbing all three points, with the spoils shared.