Alfredo Morelos broke his scoring duck against Celtic as champions Rangers left Parkhead with a 1-1 draw and their unbeaten Scottish Premiership run intact.
Celtic striker Mohamed Elyounoussi headed in an Odsonne Edouard cross in the 23rd minute before the Gers' Colombian striker levelled in the 38th minute, also with a header.
It was Morelos's first goal against Celtic at the 15th time of asking and it proved, along with a fine performance by Allan McGregor, to be enough make it 33 league games unbeaten and keep the 20-point gap between the teams.
Interim Hoops manager John Kennedy, who stepped up when Neil Lennon resigned last month, wanted to put down a marker and his side certainly did that.
The draw came at the end of a traumatic week for the Ibrox men in which they were knocked out of the Europa League by Slavia Prague with midfielder Glen Kamara claiming he was subject to a racist slur by Ondrej Kudela.