Middlesbrough goalkeeper gifted Matej Vydra the goal he needed to complete his hat-trick for Derby on Saturday afternoon.
It's almost as if Boro's afternoon wasn't already going badly enough. They hadn't taken advantage of some intense pressure at the end of the first half, were 2-0 down two minutes into the second half and had just lost Daniel Ayala to a second booking.
But when he miscued a clearance, the misery was compounded at the Riverside. The ball fell right into the path of Vydra, who immediately stuck the loose ball into the back of the net, completing the 3-0 rout with his 11th league goal of the campaign.
Click on the video above to see how Vydra capitalised on the error and notched his hat-trick.