Oregon: The Ducks took a hit with the departure of Taylor Hart, who was named second-team All-Pac-12, but have a talented player in Arik Armstead lined up to take his spot. Armstead started five times in 2013 and left the basketball team midseason to shift his focus back to football. T.J. Daniel, Jason Sloan are projected to be in the mix for playing time.
Oregon State: Scott Crichton is gone, but Dylan Wynn remains and will likely be the Beavers' best defensive player a year after finishing fourth on the team in tackles. Lavonte Barnett, Crichton's primary backup in 2013, and Jaswha James figure to compete for the starting job, but there are two others to keep an eye on. Obum Gwacham recently switched from receiver and Mike Riley has been complimentary of Titus Failauga, who is coming off his redshirt.
Stanford: Henry Anderson has a chance to be one of the best defensive players in the conference and Blake Lueders, who switched from OLB, began the spring atop the depth chart. The intriguing prospect is Luke Kaumatule, who was recruited to play defense but began 2013 as the team's starting tight end. Spring will be important for his development, but his raw ability is impressive.
UCLA: Both Ellis McCarthy and Eddie Vanderdoes were all-Pac-12 honorable mention last season and highlight a talented UCLA defensive line. Their return will help account for the loss of Cassius Marsh, who started 12 games last year. Both McCarthy and Vanderdoes can play inside or outside, but the Bruins listed them both at end. Highly recruited DE Kylie Fitts saw playing time as a true freshman last season.
USC: Leonard Williams, the only sophomore named first-team all-Pac-12 on defense last season, is the best in the conference. Delvon Simmons, who sat out last season after transferring from Texas Tech, has a lot of game experience. He started 12 games for the Red Raiders in 2012 and had regular playing time as a freshman there in 2011. Both Simmons and J.R. Tavai, who was an all-Pac-12 honorable mention selection, can play inside or outside.
Utah: There's no replacing Trevor Reilly, who made 100 tackles despite lingering effects from a torn ACL, but Nate Orchard and Hunter Dimick both saw extensive playing time last season. The Utes have five other defensive ends on the roster, but of that group only LT Filiaga made a tackle last season.
Washington State: With Toni Pole expected to move back inside, the depth chart will look similar to how it did going into last season, minus Matt Bock. After making 50 tackles last year, Xavier Cooper will start on one side, with Destiny Vaeao and Lyman Faoliu strong candidates for more playing time. Emmitt Su'a-Kalio is coming off a redshirt, and the Cougars also signed a pair of defensive ends from Hawaii in Kingston Fernandez and Hercules Mata'afa.