EUGENE — Since late March, Oregon has lost 25 percent of its touted 2012 recruiting class.
Redshirt sophomore linebacker Oshay Dunmore is the latest Duck to leave the program. The 6-foot-2, 217-pound former Newport High two-way football star and state track champion played in 10 games last season and finished with nine tackles.
Dunmore could not be reached by The Register-Guard on Tuesday after his name was removed from the roster on the Oregon athletic department website. He joins classmates Eric Amoako (defensive back), Dylan Ausherman (punter), Brett Bafaro (linebacker) and Jake Rodrigues (quarterback) on the growing list of departures.
The Ducks entered the winter strength and conditioning program with 20 members of the 21-man 2012 recruiting class, which was ranked No. 13 nationally by 247Sports and No. 16 by Rivals, still on the team.
The other member of Chip Kelly's final class is Kyle Long.
Long only had one year of eligibility remaining when he transferred to Oregon and was a Pro Bowl offensive lineman for the Chicago Bears as a rookie in 2013.
"Are guys going to transfer sometimes due to playing time? Sure. That happens and has happened here," Helfrich said in February when asked about avoiding major roster attrition during his first year as head coach. "We just try to be as efficient as possible in the evaluation on the front end to hopefully have that show up down the road."
Senior wide receiver Eric Dungy and redshirt freshman quarterback Damion Hobbs have also transferred since the Ducks finished the 2013 season with an 11-2 record and a No. 9 ranking in the final polls.
Last week Oregon granted linebacker Tyrell Robinson his release. The talented sophomore said Tuesday he doesn't know where he will end up.
Robinson played in nine games and finished with 12 tackles as a true freshman. His twin brother, Tyree Robinson, is still expected to compete for the Ducks' starting strong safety position.
Stephen Amoako, Eric's twin brother, also remains on the roster.
The program lost two starters, running back De'Anthony Thomas (Kansas City Chiefs) and cornerback Terrance Mitchell (Dallas Cowboys), early to the NFL draft. Tight end Colt Lyerla quit the team five games into his junior season and signed with the Green Bay Packers as an undrafted free agent.
However, three key team leaders — quarterback Marcus Mariota, center Hroniss Grasu and cornerback Ifo Ekpre-Olomu — decided to return to Oregon to finish school (all three graduated on Monday) and play for the Ducks in 2014.
"In terms of Marcus staying and Ifo staying and some of those other guys staying, or our coaching staff staying, that's a good thing for Oregon football," Helfrich noted.
Oregon's offseason got off to an ominous start when linebacker Rahim Cassell was arrested by Eugene Police in the early morning of May 4 for driving under the influence of intoxicants. The redshirt junior made four tackles hours earlier in the spring game at Autzen Stadium.
Cassell was expected to compete with Tyrell Robinson as a backup to Derrick Malone on the weak side. Dunmore was penciled in on the strong side behind Tyson Coleman and Torrodney Prevot.
"We are aware of the situation and continue to gather information. We have a high standard of accepted behavior for our student-athletes that will not be compromised," Helfrich said in a statement released by Oregon after Cassell's arrest.
"Once we have a complete determination of the facts, we will take appropriate steps."
Former Duck Karrington Armstrong, a fifth-year senior who played in eight games last season as a backup center, was arrested by Eugene Police at 1:55 a.m. on Monday and charged with DUII, hit-and-run and criminal mischief.