Thornborough Athletic defeated Brackley Sports on penalties in a classic 2nd round tie of the North Bucks & District Football League, Premier Division Trophy.
Boro trailed at the break to goals from Prescott and Carpenter but came out fighting in the second period.
Tom Kelsall pulled a goal before an own goal and a Stuart Parker strike completed a dramatic turnaround to put Boro ahead.
The home side were not to be out done though as they equalised in the final minute of injury time through Mousden and in doing so taking the game into extra time.
The additional thirty minutes never saw a goal and the tie went to penalties with the sides level at 3-3.
Parker, Alex Hoggart, Ben Watts and keeper Nick Chapman scored for the side before Chapman saved a spot kick to help Boro progress to the semi-final next weekend.