ANN, ARBOR, Mich. -- Michigan's offense is on a roll.

The Wolverines hung a season-high 448 offensive yards in a 31-0 win over No. 22 BYU on Saturday.

Wolverines senior transfer quarterback Jake Rudock, formerly of Iowa, completed 14 of 25 passes for 194 yards and added 33 yards and two touchdowns.

Rudock's 17-yard rushing touchdown helped the Wolverines (3-1) close the first half in impressive fashion, handing the Cougars (2-2) their largest deficit of the season. Through two quarters, the Wolverines came within four points of tying a season-high point total. They beat Oregon State 35-7 in Week 2.

The offense is coming a little easier these days for Michigan, which has shutout opponents in 10 of the past 12 quarters. The Wolverines have allowed just one touchdown in the last nine quarters.

Because of improved blocking and timing on offense, plus the ramped up defense, Rudock has found himself in good position to make plays.

"Yeah, I think. Those runs kind of opened up in the red zone," Rudock said. "You've got to give (BYU) credit. They covered our guys well. But if they're covering them so well, sometimes that opens up running lanes. And then, yeah, unanswered points.

"That's always a benefit to our team. But give all the credit to the defense and their coaches, and all those guys."

Because of defensive power, Rudock doesn't "have to worry about pressing." That was clear Saturday, as the Wolverines offense was strong from the get-go.

Michigan outgained BYU 448-104 in offensive yardage but coach Jim Harbaugh downplayed that accomplishment.

"Way too early for us to begin patting ourselves on the back," he said.

Running back De'Veon Smith matched his career high of 126 yards in the first half. The 5-foot-11, 228-pound junior wowed the crowd by breaking several tackles -- one at the line of scrimmage, one in linebacker/secondary level and another 30 yards down the field -- before running 60 yards for a touchdown with approximately 12 minutes to play in the second quarter.

With a 21-yard touchdown catch in the second quarter, receiver Amara Darboh helped the Wolverines rush to a 14-0 lead. Smith's 60-yarder came after that catch, which was followed by Rudock's 17-yard run.

Smith left the game in the third quarter with a right foot injury but Harbaugh said X-rays were negative. Smith said he plans to play next week, according to ESPN News.

Senior kicker Kenny Allen hit a 41-yard field goal that gave Michigan a 31-0 lead at the break.

BYU freshman quarterback Tanner Mangum completed just four of 13 passing attempts in the first half for 25 yards. He was sacked twice in the first half -- three times overall-- and finished with a season-low 53 yards on 11 of 27 completions.

Cougars linebacker Harvey Langi and defensive end Remington Peck each sacked Rudock once on Saturday. Cornerback Micah Hannemann and safety Michael Wadsworth each posted 10 tackles for BYU.

Cornerback Channing Stribling led Michigan with four tackles and a pass break-up.

NOTES: Prior to Saturday, Michigan had come within just a few plays of shutting out opponents for three consecutive weeks. Oregon State scored during its first drive in Week 2, but then was held to roughly 70 yards of offense after the touchdown. In Week 3, UNLV's Devonte Boyd ruined the Wolverines' shutout bid with a 6-yard touchdown reception from quarterback Blake Decker. ... The Wolverines go on the road next week to face Maryland. ... Saturday marked BYU QB Tyler Mangum's third career start. ... The Cougars play UConn next Saturday.