West Ham United humbled holders Manchester United 4-nil to reach the English football League Cup semi-finals with Old Trafford reject Jonathan Spector scoring twice in the swirling snow at Upton Park.
With the crowd scarcely believing their eyes, striker Carlton Cole added two second half goals as the Premier League's bottom team blew away United's 29-match unbeaten run in all competitions.
Manchester United, top of the league and winners of the League Cup for the past two seasons, made wholesale changes from the side that blew aside Blackburn Rovers 7-1 at the weekend and were given a taste of their own medicine.
Arsenal overcame Wigan Athletic 2-nil at the Emirates Stadium in the other all-Premier League quarter-final clash on a freezing night in the capital.
Birmingham City host top flight rivals Aston Villa, last season's losing finalists, in a Midlands derby tomorrow when Roy Keane's struggling Championship (second division) side Ipswich Town are at home to West Bromwich Albion.