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LAS VEGAS (AP)-- UCLA coach Jim Mora insisted his Bruins were much more than quarterback Josh Rosen, even though the freshman sensation stole some national headlines in his college debut.

Running back Paul Perkins proved Mora was right.

Perkins ran for 151 yards and two touchdowns, Rosen threw for another score and No. 13 UCLA rolled to a 37-3 victory over UNLV on Saturday night.

Rosen completed 22 of 42 passes for 223 yards as the Bruins (2-0) piled up 526 yards in all, the second consecutive week UNLV's defense allowed more than 500.

After the first two games of his college career, Rosen is 50 of 77 for 574 yards and four touchdowns. His performance against Virginia last week earned him the Walter Camp National Player of the Week award on offense.

UNLV (0-2) lost starting quarterback Blake Decker to an injury at the end of the first quarter. Decker was 2-of-6 passing for 52 yards.

After the game, coach Tony Sanchez confirmed Decker sustained a hamstring injury that will be evaluated this week. With depth already a concern for the Rebels, losing Decker was a major blow.

His replacement, Kurt Palandech, struggled and finished 4 of 15 for 4 yards with one interception.

With a little more than three minutes left in the half, Palandech fired an errant pass into the arms of UCLA linebacker Kenny Young, who raced 23 yards for a touchdown that extended the lead to 17-0.

The Bruins got the ball to start the second half and needed 10 plays to drive 65 yards in 2:52. Perkins rumbled 7 yards for a touchdown as UCLA moved ahead 24-0.

Two possessions later, Perkins put an exclamation point on his performance when he raced 56 yards to ice the game for the Bruins, who took a 31-0 lead with 6 minutes left in the third quarter.

UNLV's defense shined in the fourth quarter as the Rebels were able to pick off back-up UCLA quarterback Jerry Neuheisel, twice.

Kenny Keys got the first pick with 6:31 left in the final stanza and returned it to the 2 yard line, but a penalty brought the ball back into UNLV territory.

On UCLA's next possession, Trent Langham intercepted Neuheisel, who was 2-of-9 for 30 yards in the game, and returned the ball 61 yards to the UCLA 14. The Rebels were then able to get on the board after Nicolai Bornand hit a 32-yard field goal.