The sweep by Cascade gave both Chapel Hill teams 5-6 league records and they are now on the outside looking in for the upcoming District 9-A Tournament, stuck in fifth place and in danger of having to make a first round road trip.
The Lady Rockets (9-16, 5-6) served up the only loss to the Lady Champions (16-6, 11-1) so far this season had a chance to make it two in a row, but the upset was spoiled on a Kelsey Parker game-winner with 10 remaining in the contest.
Forrest and Cascade played an even first half, tied at 20 before the Lady Rockets took a one-point 36-35 lead on a Hannah Phifer free throw at the end of the third quarter.
Haley Edmondson, who led all scorers in the ballgame with 19 points, put Cascade in front early in the fourth quarter.
Forrest surged ahead again at 41-37 on a Caitlyn Yost bucket, followed by a Phifer three-bomb with 4:27 remaining in the contest.
Yost would hit one of two from the free throw line, stretching the Lady Rockets' lead to five points with just over two minutes to go.
Edmondson scored five out of the next six points in the contest, cutting the Forrest lead to one-point at 43-42 with 1:39 left in the game.
Yost would score to make it a three-point game once again, but Edmondson drilled a long three-pointer, tying the game at 45 with less than a minute to play.
The biggest call of the game came at the other end when Yost drove to the hoop, but was called for an offensive foul.
Cascade called timeout with 41.3 ticks remaining and after the stoppage, the Lady Champions held the ball for a good look and they got it when Parker broke free for the go-ahead bucket.
Forrest could not get a good shot off out of a timeout and the game ended with Cascade taking the win.
Savannah Brothers led Forrest in the scoring column with 12 points (2 treys), Candace Daughrity added 11 (3 treys), Phifer scored nine (2 treys), Scarlett Roberson (1 trey) and Yost both had five points apiece, and Kirston Holder finished with three points.
Parker finished with 10 points for the Lady Champions, Elora Skuce ended up with nine points on three treys, Maya Gaston scored six, Jessica Ervin netted a deuce, and Andrea Pigg had one marker.
All looked good for the Rockets early on after a Mark Pope steal and score gave Forrest an 8-0 lead, but Cascade began to chip away at the Rockets' lead and the orange and black would eventually cut the deficit to two points on a pair of late buckets at the end of the first quarter by James Lattimore.
The third quarter belonged to Cascade, outscoring the Rockets 19-12 to take a 47-36 lead to the final eight minutes.
The hometown Champions (15-6, 9-3) surged ahead by as many as 15 points in the fourth quarter before Forrest (14-9, 5-6) managed a last charge, cutting the deficit to nine points, but there was not enough time for the comeback in the 10-point loss.
Barnes led all scorers in the contest with two dozen points for Cascade, while Hatchett and Lattimore had a dozen points apiece.
Ty Hoeft and Jesse Pruitt both netted 11 points to lead Forrest, while Pope had 10, Rumley scored eight, Horvath added six, Daughrity ended up with four points, and Kennedy Mathis and Dakota Zimmerman both finished with a deuce.