University of Oregon Head coachannounced title enhancements for three members of his coaching staff on Thursday.Offensive coordinator/quarterbacks coachhas added assistant head coach to his duties. Safeties coachhas added co-defensive coordinator duties to his role entering the 2018 season. In addition to being the associate head coach/defensive line coach,will now also serve as co-defensive coordinator/run game coordinator for the defense. The duo will work alongside defensive coordinator, who handles the play calling."I'm very happy to announce these promotions for Marcus, Keith and Joe ," said Cristobal. "These guys have played a critical role in the advancement of the program, helping us establish an identity and culture. I have a ton of belief in them as teachers and coaches in the game of football and in life."Arroyo joined the Ducks in February of 2017 as co-offensive coordinator while coaching the quarterbacks and tight ends. He was promoted to offensive coordinator this past December. In his first season with the Ducks, Oregon tied for the Pac-12 lead with seven games of 40-plus points. Oregon is the fifth stop for Arroyo as a play caller, having already done so with the Tampa Bay Buccaneers, Southern Mississippi, Wyoming and San Jose State.Veterans of the Pac-12 Conference as both coaches and players, Salave'a and Heyward were part of Leavitt's defensive staff in 2017 that provided an immediate improvement over the previous year. The Oregon defense made major jumps in nearly every statistical category, highlighted by total defense (from 115th to 46th).Entering his second season leading Oregon's safeties room, Heyward has coached defensive backs at four different Pac-12 schools and was an All-Pac-10 cornerback at Oregon State. Prior to Oregon, he was the secondary coach at Louisville in 2016.An All-Pac-10 defensive lineman at Arizona before playing in the NFL for eight seasons, Salave'a spent five seasons at Washington State prior to arriving in Eugene. While at Washington State, he served as the defensive line coach all five years and was the assistant head coach the final two.