ANN ARBOR, Mich. — Michigan Wolverines football knew it had a challenge ahead of it with No. 1 Oregon in town. Quarterback Dillon Gabriel entered his 59th career game with the highest completion percentage in the country, and the Ducks’ high-flying offense was averaging 35 points per contest, the third-most in the Big Ten. The Maize and Blue started on their heels in the first half, and Oregon was firing on all cylinders in the 38-17 win at The Big House. The Ducks scored touchdowns on four of their first five possessions, totaling 304 yards, including 217 through the air. The first score was …