The father of Manchester United midfielder Ryan Tunnicliffe became £10,000 richer when the 19-year-old came on for his debut in the 76th minute of Wednesday night's Capital One Cup win over Newcastle.
Mick Tunnicliffe placed a £100 bet when his son was nine that he would one day play for United (at odds of 100-1).
His moment came when Marnick Vermijl was replaced during the 2-1 win.