"The Osceola coach (Brandon Powell) said we matched their speed. I don't know about that, but we contained them well," explained Carter. "I'm very proud of the way the boys played."
The Reb defense lost containment one time on the junior Seminoles' first drive, when facing a third-and-17, Osceola quarterback Kaelin Thomas found Mark Thomas over-the-middle for a 68-yard touchdown to tie the score at 6-all.
Other than that, the Highland defense forced a punt and recovered three fumbles to stymie Osceola's offense.
Carter rearranged his offense by moving Spenser Stowers and Deon Stewart from the receiver position to running backs.
Both got several carries to assist quarterback Avery Johnson, who was ill but still able to play.
The Rebels opened the game by driving 81 yards on eight plays.
A false start penalty negated a Johnson to Stewart TD pass, but the Rebel QB took the next play 23 yards for the score.
His conversion pass was intercepted.
Highland responded well to Osceola's only score when Brody Ninemire returned a short kickoff to the Seminole 35.
Johnson picked up 23 yards on the drive and Stowers pushed it in from one-yard out to retake the lead, 14-6.
"My quarterback was a little under the weather; had to use him just on offense. I only called his number when I need him, but when I needed him, just like all year long, he's come through," said Carter. "We blocked really well. As a whole, our team stepped up."
Austin Himschoot recovered Osceola's first fumble at the Rebel 20 to stop an eight-play drive.
Johnson hit Ninemire for a 14-yard gain and Stewart found four yards rushing.
A holding penalty backed up the team to setup a 74-yard Johnson sweep along the Seminole sideline for a touchdown.
Wade Paul recovered Osceola's second fumble at the Seminole 33 on the first play of their next drive.
The ball had been pitched backwards and the running back didn't realize it was a live ball.
Stowers had carries of four, seven and three yards before Johnson found Stewart in the end zone for an 11-yard score, and a 28-6 lead with seconds left in the half.
The Reb defense forced a Seminole punt to start the third quarter.
Stowers received the punt around mid-field and returned it to the Osceola 13.
Stewart swept for a 12-yard gain and Stowers took it in for a touchdown.
Ninemire added the conversion for a 36-6 advantage.
Cody Phipps recovered Osceola's third fumble at the Seminole 36.
Johnson bullied his way for 28 yards, Stewart added another five before rushing for a seven-yard TD.
Johnson led the team with nine carries for 205 yards and was three-of-four passing for 41.
Stowers rushed for 39 on nine carries, while Stewart caught two passes for 27 yards and rushed five times for 28.
Highland (7-0, 5-0) will host Pocahontas on Oct. 20.