Philadelphia head coach Doug Peterson and his quarterback Nick Foles made one of the gutsiest calls in Super Bowl history against the Patriots when they decided to run a trick play on 4th and Goal from the one-yard line just before halftime of Super Bowl LII.

Of course, the play worked and will undoubtedly go into NFL legend as one of the most surprising plays in Super Bowl history.

The play, known as “Philly Special” by the Eagles, was believed to be first run on the college level by Clemson several years ago when the Tigers needed to convert a two-point conversion in order to win against Georgia Tech. Clemson’s offensive coordinator at that time? None other than Arkansas head coach Chad Morris.

During a recent appearance on Arkansas radio program Sports Talk with Bo Mattingly, the Arkansas coach was asked about the play. According to the Razorback coach, he predicted the play would be run once he saw Nick Foles shift to the right of the center prior to the snap. Morris said the play, known as “Detroit” by Clemson, originates from the high school ranks in South Carolina.

Here’s Morris’ full explanation of where the play comes from and his thoughts as he watched the Super Bowl live: