Preston North End were the big casualties on the opening night of the League Cup losing 3-2 to Accrington Stanley. Alex Neil's side looked to have forced extra time after Jordan Hugill equalised for them in injury time but Billy Kee proved to be Accrington's hero with the winner in the 93rd minute.
Brentford were taken to extra time by AFC Wimbledon with Ollie Watkins eventually scoring the winner. Cardiff also needed an extra 30 minutes to make the second round as they beat Portsmouth in a repeat of the 2008 FA Cup Final
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The fixture at Blundell Park between Grimsby and Derby was abandoned following heavy rain all day.