This was supposed to be a retooled Florida State attack with first-year offensive coordinator Jimbo Fisher bringing the flash back to the Seminoles in the latest version of the father-son Bowden Bowl.
Instead, it was Harper and the Tigers who came out throwing to take a 21-0 lead before the game was 17 minutes old _ and bring their coach, Tommy, his third consecutive win over father Bobby's Seminoles.
Florida State rallied from 24-3 down in the second half of the season opener for both teams. When Drew Weatherford hit Richard Goodman for a 15-yard TD pass with 11:40 left, the Seminoles trailed by 6.
Weatherford and the Seminoles got the ball back three more times after that, but could not score.
Clemson fans rushed the field and the collapsible goal posts came down after Weatherford's final pass fell to the ground. But officials chose to review the play, moving orange-clad fans out of the way.
Finally, they were told the play stood and the game was indeed over.
Harper, a junior, was a big reason for the celebration.
He connected with freshman tight end Brian Linthicum on an 11-yard scoring pass and Aaron Kelly for a 41-yard TD connection as the Tigers took a 21-0 lead less than 17 minutes into the game. In between, tailback James Davis scored on a 29-yard run.
Florida State stumbled through a miserable first half where it managed only one first down and 62 yards.
Weatherford was under constant pressure and looked lost when he wasn't.
Florida State only crossed midfield once in the first half after Roosevelt Lawson's blocked punt. The Seminoles found their rhythm in the second half.
Antone Smith had a 49-yard run to Clemson's 1, then followed with the score that drew them to 24-11. Goodman's TD catch tightened things up even more.
But Weatherford and the Seminoles couldn't sustain the rally.
They got to Clemson's 31 with 3 minutes left. But Florida State's junior quarterback threw three incompletions and was taken down from behind by defensive lineman Philip Merling.