Top-seeded Blackman withstood a hot-shooting Riverdale team, as well as a furious Warrior comeback, to advance to the District 7 title game with a 63-55 victory at home Saturday.
The Blaze will face Oakland in the championship game at home on Tuesday night at 7:30 p.m.
The Blaze placed four players in double figures, led by Trent Gibson and Brandon Thomas with 14 each. Jaellen White and Donovan Sims added 11 apiece.
"I thought we executed our offense against their 1-3-1 zone," said Blackman coach Barry Wortman. "We did a great job sharing the ball. We had 14 assists on 16 buckets, and that's a pretty good number.