Dundee United came from two behind in dramatic fashion to grab an unlikely share of the points against sloppy Celtic in their Clydesdale Bank Premier League clash at Tannadice.
The Hoops were leading through goals from Miku, his first for the club since signing on loan from Getafe in the summer, and Tony Watt and looked certain to take the points back to Glasgow after scoring with 10 minutes from the end.
However, in the final minute of normal time United substitute Gary Mackay-Steven, on for Richie Ryan, scored what looked like a late consolation only for Efe Ambrose, on for the injured Thomas Rogne, to put a Barry Douglas cross past his own goalkeeper Fraser Forster in injury time.
It was not until the 13th minute that fans witnessed their first real piece of goalmouth action when Rogne headed Scott Brown's cross from the right past the post. The visitors were more purposeful but suffered a blow in the 20th minute when Ambrose had to replace Rogne after the Norwegian stopper limped off with a leg injury.
Moments later, Celtic threatened again when midfielder Victor Wanyama burst powerfully through the middle and when Kris Commons sent a cross from wide on the right to the far post, Watt headed over. The hosts had a chance in the 35th minute as United midfielder Stuart Armstrong finished off a fine move by thrashing a drive from 25 yards over the bar.
The champions almost took the lead less than a minute after the restart when Watt released overlapping left-back Emilio Izaguirre inside the United box but the Honduran hit the outside of the post with his left-footed effort.
Almost immediately Izaguirre was replaced by Miku, who went up alongside Watt, with Mulgrew moving to left-back. Moments later United missed their best chance of the match as Willo Flood's powerful long-range shot was spilled by Forster and Johnny Russell blazed over the bar from around eight yards out.
But when Celtic's landmark opener from Miku arrived soon afterwards it was well deserved. Wanyama combined with Watt, who played in the Venezuelan, and he calmly chipped the ball over Radoslaw Cierzniak from 10 yards.
The home side had only themselves to blame when Watt grabbed the Hoops' second as a poor clearance from Cierzniak arrived at the feet of the teenage striker and he bore down on goal before rifling in a shot.
It looked to be all over for United, even when Mackay-Steven guided the ball past Forster after Kelvin Wilson had cleared a shot from United substitute Rudi Skacel, on for Armstrong. However, there was more drama to follow in the first minute of added time when Ambrose headed a Douglas cross into his own net to leave the travelling fans bemused.