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Oregon quarterback Marcus Mariota (8) runs into the end zone for a touchdown during the second quarter of an NCAA college football game against South Dakota in Eugene, Ore., Saturday, Aug. 30, 2014. (AP Photo/Ryan Kang)

EUGENE, Ore. (AP) — Marcus Mariota threw for 267 yards and three touchdowns then ran for one more before sitting out the second half, leading the third-ranked Oregon Ducks to a 62-13 victory over South Dakota in the season opener for both teams on Saturday night.

Running back Byron Marshall was Oregon's top receiver with eight catches for 138 yards and two touchdowns for the Ducks, who have won 10 straight home openers. Freshman Royce Freeman, a five-star recruit out of Imperial, California, ran for 75 yards and two more scores.

Mariota's 62-yard touchdown pass to Dwayne Stanford on Oregon's first series of the game gave him the Ducks' career record for touchdowns with 79 (64 pass, 14 rush and one reception), surpassing Joey Harrington.

Oregon coach Mark Helfrich yells during the first quarter of an NCAA college football game against South Dakota in Eugene, Ore., Saturday, Aug. 30, 2014.
Oregon coach Mark Helfrich yells during the first quarter of an NCAA college football game against South Dakota in Eugene, Ore., Saturday, Aug. 30, 2014. (AP Photo/Ryan Kang) (Ryan Kang/AP)

Trevor Bouma ran for a 3-yard TD and Miles Bergner kicked a pair of field goals for the Missouri Valley's Coyotes, who went 4-8 last season but were surprisingly plucky against the bigger and faster Ducks.



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The Oregon defense stops South Dakota running back Trevor Bouma (21) during the first quarter of an NCAA college football game in Eugene, Ore., Saturday,
The Oregon defense stops South Dakota running back Trevor Bouma (21) during the first quarter of an NCAA college football game in Eugene, Ore., Saturday, Aug. 30, 2014. (AP Photo/Ryan Kang) (Ryan Kang/AP)

Oregon wide receiver Dwayne Stanford (88) dives into the end zone for a touchdown during the first quarter against South Dakota in an NCAA college football
Oregon wide receiver Dwayne Stanford (88) dives into the end zone for a touchdown during the first quarter against South Dakota in an NCAA college football game in Eugene, Ore., Saturday, Aug. 30, 2014. (AP Photo/Ryan Kang) (Ryan Kang/AP)

Oregon quarterback Marcus Mariota (8) looks for an open receiver during the first quarter against South Dakota in an NCAA college football game in Eugene,
Oregon quarterback Marcus Mariota (8) looks for an open receiver during the first quarter against South Dakota in an NCAA college football game in Eugene, Ore., Saturday, Aug. 30, 2014. (AP Photo/Ryan Kang) (Ryan Kang/AP)

The Oregon football team runs onto the field for an NCAA college football game against South Dakota in Eugene, Ore., Saturday, Aug. 30, 2014. (AP
The Oregon football team runs onto the field for an NCAA college football game against South Dakota in Eugene, Ore., Saturday, Aug. 30, 2014. (AP Photo/Ryan Kang) (Ryan Kang/AP)