Rashad Ross returned the second-half kickoff 100 yards for a touchdown to break open a close game and Taylor Kelly threw three scoring passes to tailback Marion Grice in Arizona State’s 51-17 victory over Colorado on Thursday night.

Grice caught touchdown throws of 37, 16 and 20 yards from Kelly, who threw for 308 yards and five touchdowns with no interceptions thanks to a steady diet of successful screen passes. He also tucked it and ran for 67 yards through huge chunks of open space all night long.

Arizona State went for 593 yards of total offense, while Colorado spent most of the second half hovering around the Mendoza line of 200 yards of total offense, settling for 255 yards after gaining some yards late in the game when the contest was out of hand, and most of the black-out home crowd of 45,161 had headed for the exits.