Xavier Adams paced the Indians, who had won 15 of their last 16 games before Friday's loss, with 18 points, while Tyler Bates added 17 and Ricky Handy added 14.
The Indians trailed by eight after the first quarter and were never able to recover.
“They are the fastest team we played all year,” Alvarado coach Michael Seibert said. “They were long and athletic and we had a tough time dong what we wanted to do.”
Alvarado trailed by nine at the half, but the Matadors essentially put the game away by outscoring the Indians by 11 points in the third quarter.
“Right at the start of the half they jumped on us,” Seibert said. “They had good defensive pressure which made it difficult for us to work the ball down the court. We had a lot of turnovers that they turned into points.”
The Indians trailed by 21 points in the third quarter. They battled back to cut the lead to 11 points midway through the fourth quarter, but they would get any closer.
With the loss, the Indians, who went undefeated in district play, finish the year 22-15.
“It's been a very successful season. The kids have accomplished a lot and done some things that haven't been done at Alvarado for quite some time,” Seibert said. “They have laid a foundation.
It was an exciting year and I'm excited to see where they can take it from here.”