Arsenal 2 Manchester United 2
Four goals, one sending off and an frantic ninety or so minutes later and it is still not clear with whom the advantage lies in the race for this year's Premiership title.
United are still three points ahead but Arsenal have five games left compared to four for their rivals and have a single-goal advantage - but they made things mighty difficult for themselves in this titanic encounter.
Sol Campbell was dramatically given his marching orders eight minutes from time for elbowing Ole Gunnar Solskjaer after the Gunners had immediately conceded a newly acquired lead to a Ryan Giggs header.
Ruud van Nistelrooy put United ahead in 24 minutes with a classic solo strike but Ashley Cole's shot deflected off Thierry Henry and beyond Fabien Barthez for a scrappy equaliser six minutes after half time.
Henry, looking well offside, coolly drove home 10 minutes later for his second only for Ryan Giggs to nod home that equaliser within 63 seconds.
Campbell's dismissal, his second of the season, left Arsenal an uphill task to survive the last few minutes - but Henry almost scored again when his shot was saved by Fabian Barthez's legs.
It had been a hard-fought but largely clean contest and a confrontation between Giggs and Cole in the 71st minute after the Arsenal man's foul was a rare flash of frayed tempers.
And it looked like whoever kept their cool and discipline the best in the closing 20 minutes might be decisive.
Arsenal's fightback was illustrated by their tally of six corners at this stage before United won their first, a poorly delivered effort by Giggs which Campbell comfortably headed away.
With 16 minutes left, Arsenal sent on Sylvain Wiltord in place of the tiring Bergkamp.
Ten minutes from time, Pires was heavily brought down by Nicky Butt and immediately replaced by Kanu. From the free kick Henry went for the spectacular but fired his effort well wide of the mark.
But then two minutes later came high drama when Campbell, having dispossessed Solskjaer, fended off the Norwegian's recovery challenge with a flailing right arm and was shown a straight red card by Halsey.
As well as condemning Arsenal to fight with 10 men for the remaining minutes, the England defender now faces a four-match ban for his second dismissal of the season - which means he would miss the FA Cup Final against Southampton.