Hitting a free throw with under four seconds remaining, Flagstaff's Ramsey Penza gave the Eagles the eventual victory, 60-58, Friday night against the rival Coconino Panthers.
Facing off for the first time in a state tournament game, the rival schools played down to the wire again with Flagstaff pulling off the upset a week after falling to Coconino at the buzzer.
The Eagles, the No. 22 seed entering Friday, will face the No. 1 seed to be revealed on Saturday. The likely top team will be familiar foe Shadow Mountain, who previously eliminated Flagstaff from the post season and beat it in a state final.