Three games into the season and No. 4 Oregon still has plenty of work to do, at least according to coach Chip Kelly. The Ducks rolled past lower-division Tennessee Tech 63-14 on Saturday. Redshirt freshman quarterback Marcus Mariota threw for 308 yards and four touchdowns before the starters were pulled. Multitalented De'Anthony Thomas had 222 all-purpose yards on 10 touches. He ran for a 59-yard touchdown and caught a 16-yard scoring pass from Mariota. And while the Ducks piled up 652 yards in total offense compared to the Golden Eagles' 177 yards, Oregon had an uncharacteristic 12 penalties for 105 yards.