The win means the Canes will visit the No. 2 seed from Region 8-AAA -- either North Hall or Walnut Grove -- next Saturday night. Tipoff time has yet to be determined.
Assistant coach Darrell Demastus said the defensive play and speed of Cartersville (15-7) helped key the victory over the Ramblers (19-6).
"We were able to hold them to 30 percent shooting," he said.
The Canes led throughout the game, holding a 12-9 lead after a quarter, a 33-27 margin at halftime and 44-38 after three period.
The Ramblers stayed within striking distance all evening.
"We would pull out by as much as 10 points, and they would answer, hit something and cut the margin," Demastus said.
He said Cartersville's speed also was a definite asset.
"Our kids played hard and I think they hadn't seen our kind of speed in a while," he said. "One of their coaches said we were by far the quickest team they had played."
The Canes also held down the shooting percentage for the Ramblers and were selective in their shooting.
"We came out and played solid defense," he said. "When we took the ball down, we also passed it around. I think there were only a couple of times where we actually took a bad shot. When were started improving our shot selections, everything seemed to go better for us."
"Down the stretch, they seemed to get tired," Demastus said. "We'd be on a break and not all their players [were down the court] -- three [would] still be on the other side."
Other scorers for Cartersville included J.R. Davis, 16 points; Elijah Windom, 6; Devin O'Connor, 6 points; Dalven Penn, 4 points; Kevan Washington, 3 points; Keith Gamble, 7 points; and LaTerry Hardy, 2 points.
Cartersville (15-7) finished the regular season on a roll, winning 8 of its final nine games. It defeated Ridgeland 66-50 on Tuesday in the first round of the region tournament but fell to Dalton 69-60 on Friday night.
The Canes rebounded Saturday and have now earned two-thirds of their wins in the last month.
"We want them to peak at tournament time," Demastus said. "I think they do a good job playing together. There doesn't seem to be any selfishness. If one [player is] not hot, someone usually takes up the slack."
Cartersville opens the state playoffs on the road. It will face the loser of the Region 8-AAA championship game, North Hall or Walnut Grove.