Spencer Martin, who had 12 points in the contest, got 10 of them in the opening quarter. Six other Bulldogs scored in the first eight minutes and Portageville led 23-12 after one period.
"I felt like our kids came out ready. I was anxious to see how they would come out and play, because we've had two lapses. I think we got humbled but sometimes we need that," said Portageville coach Jim Bidewell. "If we can keep this attitude and work ethic going in the right direction, by the end of the season we will have no regrets."
Jacob Summerton led the Bulldog attack in the second period. He scored 10 of his game-high, career-high 23 points in the second stanza alone.
Portageville used intense pressure on the in-bound pass to deny the Rebels any chance to get their offense going.
The pressure caused seven steals resulting in seven buckets for the Bulldogs en route to a 33-point outburst to lead 56-20 at the half.
John Griffen was the only Rebel to hit double figures with 10. Matt Malloy garnered eight.
Antonio Scott took his turn to lead the scoring in the third quarter when he canned six, all on inside buckets. Scott had 10 for the game. Willie Hassell had 18.
The Bulldogs led 80-28 at the end of three quarters.
"Our seniors set the tone for the way this game would be played, and the juniors learned and realized this is how we are going to do this," concluded Bidewell.
The fourth quarter was more of the same as Portageville outscored the Rebels 16-7 to close out the lop-sided win.
The junior Bulldogs, who are unbeaten on the season, won their contest 62-47 behind Trey Mosby's 19 markers.
Portageville will travel to Malden on Friday night to take on a tough Green Wave squad, while Richland will host Zalma.