The Trailblazers outscored the Knights 7-0 over the final four minutes as Robinson sank two free throws to give the Trailblazers a 64-62 lead before leading a fast break where she found
Delaney White for a dagger 3-pointer and a 67-62 advantage.
Sierra Canyon (29-2) outscored Ontario Christian 18-6 in the final period as Robinson finished with a game-high 32 points. She was 9 of 19 from the field and 11 of 15 from the free throw line.
Top-ranked junior
Kaleena Smith had 30 for the Knights in the loss.

South Carolina commit Jerzy Robinson had a game-high 32 points as No. 5 Sierra Canyon beat No. 2 Ontario Christian 69-62 on Saturday to win the Southern Section Open Division final. (FILE PHOTO: Louis Lopez)
After Whites triple, Ontario Christian (31-2) looked to answer and trim the five-point deficit, but a
Tatianna Griffin look was off the mark. But the Knights forced a turnover on the next Sierra Canyon possession on a shot clock violation. However, a pair of 3-point looks wouldn't fall and the Knights had two straight one-and-done possessions.
Robinson added the final margin on a low-post bucket with the clock winding under 20 seconds for their first section title since 2022-23.
The Knights led 36-30 at the half and the Sierra Canyon didn't take a lead until midway through the fourth period.
White and Oregon commit
Emilia Krstevski each added 10 for Sierra Canyon as
Dani Robinson was the only other Knights player in double figures with 16.
They will battle for the right to represent the south at Golden 1 Center on March 14 in the state final.