Entering the fourth quarter with the game tied at 25-25, the Breckenridge Bucks leaned on junior guard Caleb Spoon for some offense.
Spoon came through with 16 points in the period, which catapulted the Bucks past Eastland 48-36.
Spoon finished with a game high 25 points, 21 of which came in the second half.
"We had a great finish in the fourth quarter," Bucks coach Rob Ogle said. "We hit some big shots and then our free throw shooting was huge. Anthony (Ramirez) made some crucial steals and hit a 3-pointer when we really needed it. Our defense came up big when we needed it. Eastland is a very good team that has improved since the last time we played them."
The victory over the Mavs gives Breckenridge (20-3, 8-0) a season sweep and keeps them undefeated in district play.
The game was a tight contest throughout the night.
Breckenridge held an 8-6 lead after the first period before Eastland tied it up at 14-all headline into the half.
The Mavs hit three consecutive 3-pointers midway through the third quarter to build a 25-21 lead.
The Bucks were able to even the score at 25-25 befroe the quarter ended with baskets from junior guard Rigo Gallegos and Spoon.
Spoon started the fourth quarter with a bucket and a long-range bomb to put Breckenridge ahead 30-25.
After a technical foul on Eastland, Spoon sank two free throws for an eight-point lead.
The Mavs generated some momentum after a technical foul was called on the Bucks.
Eastland cut the lead to 35-31 after a 3-pointer from Eastland guard Matt Majors.
After the teams traded baskets, sophomore guard Anthony Ramirez hit a 3-pointer from the corner to give Breckenridge a seven-point advantage.
Eastland got as close as 42-36 before the Bucks finished the game with six-straight free throws to ice the game.
Ramirez finished with eight points and a game-high seven steals.
Gallegos totaled seven points. Junior guard Clay Boaz added four points while senior posts Lane Morris and Alex Benitez each had two points.
Boaz led the team with six rebounds. Spoon grabbed five rebounds.
Ramirez and Gallegos each collected three rebounds while Morris had one.
Ramirez, Boaz and Spoon each dished out two assists while Gallegos had one assist.
Spoon swiped four steals while Gallegos added one steal.
The Bucks are back in action when they travel to second-place Clyde at 8 p.m. Tuesday, Jan. 29.