Lee Cummard scored 18 points to lead Brigham Young to a 86-60 victory over Colorado State on Saturday.
Jimmer Fredette added 15 points for the Cougars (13-2, 1-0 Mountain West Conference).
Andy Ogide scored 12 points and had eight rebounds for Colorado State (5-11, 0-2). Marcus Walker added 12 points for the Rams in their conference home opener.
BYU led 46-30 at halftime.
The Cougars outscored Colorado State 46-16 during a 15-minute span at the end of the first half and the beginning of the second half. They took a 65-36 lead with 13:12 left in the game.
The Cougars shot 57% from the field and 50% from the 3-point range.
The Rams, who tried out a new offense, shot a season-low 35% from the field. They didn't sink a 3-pointer until late in the second half.