An MRI taken Wednesday confirmed that Fruitland High senior Alec Dhaenens has a torn ACL in his left knee.
Dhaenens, a starting tight end and linebacker, will have surgery soon and be out for nine months, Fruitland coach Bruce Schlaich said.
The injury occurred last Saturday when Dhaenens caught a pass against Casa Roble (Calif.) and then made a cut to avoid a defender.
"Obviously it's devastating, but it does not change our goal and focus on winning a state championship," Schlaich said. "There are 39 other kids out there that believe we can still do it, and I am one of them."
The 6-foot-4, 240-pound senior has already made a verbal commitment to play for Boise State and is a 2011 first-team selection at tight end on the 3A All-Idaho team.
Schlaich said senior Eric Corona will step in for Dhaenens on offense and that a number of players will rotate on the D-line.
With a recovery time of nine months, Dhaenens will also miss the opportunity to help the Grizzlies defend their state championship in basketball this winter.
"It's a hard spin for an 18-year-old kid to go through that," Schlaich said. "... You wait for your kid's senior year and to have it taken away in an instant is hard to deal with."