Shaking his head in disgust with a serious tone in his voice, Boise State coach Chris Petersen gave a recap of his team’s performance.

Mental breakdowns, penalties, and blown opportunities, he said.

It was hard to tell that Petersen was the coach of the winning team in a 24-7 victory over Southern Mississippi Saturday night.

“We fumbled snaps. This is game five and we’re fumbling snaps. The ball slips out of the quarterback’s hand,” Petersen said. “I don’t know. We need to practice more I know that.”

Nevertheless, No. 15 Boise State (5-0) remained undefeated and got its 14th victory in its last 15 regular-season games.

The Broncos called on their defense and a second-quarter offensive explosion to beat the Golden Eagles (2-4), who dropped their third straight home game for the first time since 1977.

Boise State stymied first-year coach Larry Fedora’s no-huddle spread offense, holding the Golden Eagles to 278 total yards and coming up with a handful of stops that helped an offense that only scored in the furious second quarter. Southern Miss came in as the nation’s No. 17 offense, averaging 457 yards a game.

The biggest stop came on fourth-and-1 at midfield with about 11 minutes left in the second quarter and the Broncos up 7-0. Southern Miss’ Austin Davis tried a quarterback sneak, but Boise State stuffed it and went up 14-0 on one of Moore’s three touchdown passes.

The Broncos also stopped the Golden Eagles on fourth down twice in Boise State territory in the fourth quarter to halt potential rallies. George Iloka batted down one pass to end a drive and Jeron Johnson ended another with an interception.

“It seems like we were threatening...We just didn’t make plays towards the end of the game that we needed to,” said Davis.

The Golden Eagles are in danger of snapping a streak of 14 straight winning seasons.

“I still think we are getting better,” Fedora said. “Boise State is a good football team. They made more plays than we did, and they made fewer mistakes than we did.”