Glasgow football giants Rangers and Celtic will have to replay their Scottish Cup fifth round clash after a 2-all draw at Ibrox ended with both sides reduced to 10 men.
Jamie Ness opened the scoring for the hosts in the third minute with his first Rangers goal before Kris Commons, playing his first Old Firm game, drew Celtic level in the 15th minute.
Steven Whittaker restored Rangers' lead after Celtic goalkeeper Fraser Forster was sent off for bringing down Steven Naismith in the box.
But Celtic captain Scott Brown made it 2-all in the 64th minute before, in another twist, Naismith, already booked for a first half foul on Mark Wilson, was sent-off for diving inside the visitors' penalty area.
The sides will now meet in a replay at Parkhead on March the 2nd.