Boise State’s first season in the reborn Pac-12 is going to ask a lot from its defense, and junior linebacker Boen Phelps is right in the middle of that conversation.
Phelps has already gone from walk-on to scholarship player to one of the Broncos’ more important defenders, and his rise has been one of the better stories on the roster. The 6-foot-1, 215-pound linebacker came to Boise State from Freeman High School in Eastern Washington and joined the program as a walk-on in 2023. He first made his mark on special teams, then kept climbing until he became a real factor on defense last season.
Originally a safety, Phelps moved to linebacker and earned a scholarship before the 2025 season. That switch paid off quickly.
He opened the year as a second-string linebacker, then grabbed the starting job early in Mountain West play. By the end of the season, he had started nine games at linebacker, finished with 66 total tackles and played a team-high 233 snaps on special teams.
He also delivered one of the Broncos’ signature moments of the year, earning MWC Defensive Player of the Week honors after a six-tackle outing and a pick-six in a blowout September win over Appalachian State.
Now the challenge gets bigger. Boise State has to replace linebacker Marco Notarainni, a two-time all-MWC selection who finished his Broncos career with 192 total tackles, 18 for loss, nine sacks, six pass breakups and three fumble recoveries. Phelps is being counted on to help anchor the middle of that defense.
He’s not the same player as Notarainni, and the Broncos know it. Phelps is smaller and still needs to tighten up against the run, but his athleticism gives him a chance to be the kind of linebacker who can cover ground from sideline to sideline and hold up in pass coverage.
The coaching staff’s confidence showed before spring practice, when Phelps was allowed to switch his jersey number from 41 to 1, a number with plenty of weight in Boise State history. That kind of move says plenty about how Spencer Danielson and his staff view him.
“I think Boen could be one of the better linebackers that we’ve had here,” Danielson said during spring practice.