Oregon State is likely to be without one of its quarterbacks, Jake Luton, when it plays host to Arizona on Saturday in the Pac-12 opener for both teams, according to coach Jonathan Smith.
Luton suffered a sprained ankle in last week's loss at Nevada. He and Conor Blount combined to throw for 459 yards in the 37-35 loss.
Blount has started the past two games and has completed 39 of 61 passes for 570 yards, with four touchdowns and one interception. Luton is 28 of 45 for 372 yards, with one TD and one inteception.
The backup for the Arizona game will be Jack Colletto.
Blount, a former walk-on, told Nick Daschel of The Oregonian earlier this month that he tries to emulate the moxie of 2017 Heisman winner Baker Mayfield, the No. 1 overall pick in the NFL Draft who walked-on at Texas Tech and Oklahoma.
Blount (6-1, 204) said he watched nearly every snap of Mayfield's time with the Sooners.
"I love that guy, the passion he plays with, the chip on his shoulder. It's the same kind of story with me," Blount said.
Oregon State (1-2) is third in the Pac-12 in passing at 314.7 yards per game, a big improvement from last season while running the spread system of Smith, a former Oregon State quarterback in his first season as head coach.
The Wildcats (1-2) are 11th in pass defense, allowing 244.3 yards per game. Arizona created its first turnover of the season last week when safety Jarrius Wallace picked off a tipped pass.