Holly Griffiths, a Manchester United fan, must have been overjoyed at her team losing last night after she accidentally placed her bet on the opposing MK Dons to beat Manchester United 4-0.
The young lady was even using a free £2.50 bonus bet and was just betting for a bit of fun.
The MK Dons rocked home with a shocking victory while most Manchester United fans could not believe what had just happened and the fact they had been knocked out of the cup.
Manchester United manager Louis van Gaal (pictured) was unavailable for comment.
One lucky bet! One very happy girl!