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Cameron Marshall, Arizona St. overwhelm Portland St.

TEMPE, Ariz. -- Cameron Marshall scored on three of his four first-half carries, and Arizona State used its quick-hitting offense to overwhelm Portland State in a season-opening 54-9 win over the Vikings on Saturday night.

Needing a good start after two lackluster seasons, Arizona State turned the first of consecutive games against Big Sky Conference schools into an early rout.

Marshall made the most of his limited opportunities, scoring on runs of 50, 38 and 5 yards to help the Sun Devils build a 30-6 halftime lead. Steven Threet looked sharp in his first start for Arizona State, throwing for a school debut record 239 yards and a pair of swing-pass touchdowns to Deantre Lewis, who added a 3-yard TD run in the fourth quarter.

Zach Brown hit three field goals, including a 53-yarder in the first half, in Portland State's first game under coach Nigel Burton.