NORMAN, Okla. -- Baker Mayfield passed for 329 yards and three touchdowns in one half of action to help No. 7 Oklahoma roll past UTEP 56-7 on Saturday.

Mayfield completed 16 straight passes to start the game. He didn't miss until just under four minutes remained in the second quarter and completed 19 of 20 passes overall.

The Sooners rolled up 676 yards of offence in their first game under new head coach Lincoln Riley. The 33-year-old was promoted from offensive co-ordinator after Bob Stoops abruptly stepped down in June.

"I'm really proud of how our kids responded," Riley said. "It was a complete effort. Offensively, we moved the ball well the majority of the day."

Mark Andrews had career highs of seven catches and 134 yards, all in the first half, for the Sooners. Jeff Badet, a transfer from Kentucky, added 91 yards on four catches as the Sooners warmed up for a showdown next weekend at No. 2 Ohio State.

Walter Dawn Jr. ran for 56 yards and UTEP's only touchdown. The Miners were held to 167 total yards.

"I was really proud of the way they settled down," Riley said of Oklahoma's defence. "The coaches did a good job of settling them down. They really settled in and played well defensively. Controlled the line of scrimmage and made competitive plays."

Oklahoma lost its opener to Houston last season and started with a 1-2 record. This was the kind of start Riley envisioned.

"Fun to see this team get off to a great start, which has been not a rallying cry, but really a point of emphasis for this group," he said. "We really take it personal the way we've played early in the year the last few years."