After leading by 26-25 after the first half, Grantsville outscored Ogden 48-17 in the second half to defeat the visiting Tigers 74-42.
The Cowboys hit 14 3-pointers in the game compared to four 3-pointers for Ogden.
Brigham Mulford hit eight 3-pointers on 11 attempts including four in the first quarter and four more in the second half.
He scored the first 12 points of the game for Grantsville all on 3-pointers followed by a triple from Tate Allred to make it 15-7 midway through the opening period.
Grantsville broke away from the Tigers in the third quarter on inside baskets from Dillen Richardson and Carter Killian followed by an onslaught of 3-pointers from Mulford (3), Gabe Mouritsen, and Jace Sandberg to push Grantsville to a comfortable 57-34 lead with under 7 minutes left in the game.
Scoring: Mulford 26, Allred 11, Mouritsen 10, Killian 9, Blake Bunderson 5, Sorensen 5, Sandberg 3, Richardson 2, Kyle Brimhall 2.
Three pointers: Mulford 8, Mouritsen 2, Allred 1, Sandberg 1, Sorensen 1, Bunderson 1.
Killian had six rebounds and Allred tallied four assists.
Grantsville (11-2) travels to South Summit 97-8) on Friday and plays at Ben Lomond (9-4) on Monday with a home game on Wednesday, Jan. 26 against Layton Christian Academy (9-5).