BYU (2-1) started the second half with a 24-4 run. Nate Austin's dunk put the Cougars up 68-34 with 10:48 left.
Bryan Umoru's jumper gave the Grizzlies a 23-22 lead with 6:45 left in the first half. But the Cougars took the lead for good with a 21-6 run to end the half. Emery scored half his points during that span, including a couple of 3s.
BYU shot 59.4 percent to Adams State's 27.7.
Umoru had 12 points for the Grizzlies.