Jeffrey D. Allred,
Brigham Young Cougars linebacker Francis Bernard (13) celebrates his interception in Phoenix on Saturday, Sept. 3, 2016.
We have to make sure we’re sound because they run a lot of different stuff. —BYU defensive coordinator Ilaisa Tuiaki

PROVO — Arizona presented a big challenge for the BYU defense, a challenge it largely met in keeping the Wildcats' high-octane offensive attack in check in helping secure last week's 18-16 win. While defensive coordinator Ilaisa Tuiaki was very pleased with the overall performance, he recognizes this week's opponent, Utah, brings a new challenge with its variety of formations.

“They’re multiple — multiple personnel, multiple formations and a bunch of different schemes,” Tuiaki said about the Ute offense. “Against the last opponent, it was a little more simple. These guys, they have big receivers, and matchups are always going to be a question for you on the outside. … We have to make sure we’re sound because they run a lot of different stuff.”

One thing that's similar are the quarterbacks. Utah is expected to start junior Troy Williams, who showed well in his team's 24-0 win against Southern Utah last week. Williams, like Anu Solomon a week ago, is a mobile quarterback who presents problems.

“Keeping someone in front of him, I think. Keeping pressure on him, disrupting his timing a bit on when to throw and all that stuff,” Tuiaki said on how to defend Williams. “If you can keep him guessing a little bit with (coverages), then you have a chance to have some time to get to the quarterback.”

Kaufusi impresses: Lineman Corbin Kaufusi played in his first football game since 2011 against Arizona and responded well, playing from his defensive end position.

“I’m really pleased with him and he’s understanding football more and more,” Tuiaki said. “It’s really cool to see. He’s picking things up, and he’s a big boy.”

Lamb plays a big role: Tuiaki expressed a lot of gratitude toward BYU assistant head coach Ed Lamb with regards to how he helps prepare the team.

“Coach Lamb is a big part of what we do,” Tuiaki said. “People don’t know that, but the guy is a genius. He’s really a smart and sound coach. So I lean on him a lot and on coach (Kalani) Sitake to punch holes in all our ideas.”

Twitter: @BrandonCGurney