2 Oregon, Marcus Mariota up to Washington's challenge SEATTLE - Marcus Mariota was finally forced to take a fourth-quarter snap for Oregon. He was just as good as he was in the first three. Mariota threw for 366 yards and three touchdowns, added another 88 yards and one touchdown rushing, and the second-ranked Ducks won their 10th in a row over their rivals to the north with a 45-24 victory over No. 16 Washington on Saturday. Mariota's passing was nearly spotless, and he used his legs to make the Huskies pay when throwing options were covered. He threw touchdowns of four and three yards to Bralon Addison and a 65-yarder to Josh Huff on Oregon's first possession of the second half. Most impressive, Mariota answered every challenge Washington made. Twice in the second half the Huskies pulled within a touchdown. Both times, Mariota responded by leading the Ducks (6-0, 3-0 Pac-12) to touchdowns of their own. Mariota topped 300 yards passing for the sixth time in his college career. Byron Marshall added 106 yards rushing and two touchdowns, and though Oregon's streak of scoring at least 55 points ended at five games, the Ducks passed their first test of the season. De'Anthony Thomas suited up for the Ducks but it was just decoration. Sidelined with a sprained ankle the past two games, Thomas went through pregame warmups but never left the Oregon sideline. Turns out the Ducks didn't need him. Bishop Sankey ran for 167 yards and touchdowns of 60 and 25 yards for Washington (4-2, 1-2), but the Huskies' defense, which stood stout against Stanford last week, was exposed by Mariota and the Ducks. The Huskies gave up 633 total yards. Sankey was responsible for a major first-half swing that left the Huskies unsuccessfully playing from behind. Tied at 7-7 and driving, Sankey fumbled for the first time this season on a third-down run at the Oregon 31. The fumble was forced by cornerback Troy Hill and recovered by Torrodney Prevot. Mariota went to work immediately, hitting Addison for 38 yards, and seven plays later the two connected again on a four-yard touchdown and a 14-7 lead. Washington went three and out on its next series holding possession for barely one minute. Oregon followed with a seven-play drive, with three plays of 15 yards or more. Marshall capped the drive with a 15-yard sprint untouched and a 21-7 Ducks lead. The Huskies closed to 21-14 on the first drive of the second half when Sankey burst 60 yards on fourth and one, but Mariota answered by dropping his long touchdown pass to Huff. The only other time Washington got within one score, came on Sankey's 25-yard touchdown run in the final minute of the third quarter to cut the lead to 31-24. Just as they had done earlier, the Ducks answered. It took less than 90 second for Mariota to find the end zone on a five-yard run, and he added a three-yard scoring pass to Addison later in the fourth quarter for the final margin. Addison finished with eight catches for 157 yards. Washington quarterback Keith Price was battered for the second straight week. His great effort last Saturday in a 31-28 loss at No. 5 Stanford gave belief that this would be the Huskies' best chance to stop their losing streak to the Ducks. But Price's receivers struggled to get separation and he was sacked four times. Price completed 19 of 32 for 182 yards.