Rangers and Celtic rounded off a difficult week for both teams by playing out a dour 0-0 draw that will do little to ease the pressure on either Russell Martin or Brendan Rodgers.
The Old Firm pair were each humiliated in the Champions League, Celtic beaten on penalties by Kairat as they exited the competition in the playoff round, with Rangers also failing to reach the league phase as a 6-0 loss to Club Brugge condemned them to a 9-1 aggregate defeat.
Yet it was Rangers who had the better of the game for long periods, and they appeared to have taken the lead when John Souttar headed home in the 32nd minute.
However, his effort was ruled out for offside following a VAR review, and there was little goalmouth action thereafter.
Indeed, the two sides combined for just three shots on target across the entire game, as they were left to settle for a share of the spoils.
Celtic are top of the table on 10 points, above Hearts on goal difference, while Martin is still waiting for his first league win as Rangers manager. They have started the season with four successive draws.
